Why We Get Stuck in Overthinking: Rumination, Worry and Mental Health

Replaying a conversation or anticipating every possible setback can feel like useful preparation. Psychological research helps explain when thinking becomes a repetitive trap, how rumination and worry overlap, and what can support a more flexible response.

A conversation ends, but your mind keeps returning to it. You reconsider a sentence, imagine a different reply and try to work out what the other person thought. Later, the focus shifts to tomorrow: what if something goes wrong, and what if you have missed an important warning?

There may be something worth learning or a problem that needs attention. Yet after another round of analysis, you have no new information and no clearer next step. The activity feels urgent even though it is no longer moving you forward.

Experiences like these are often called overthinking. Psychology offers more precise ways to understand them. The useful questions concern how thinking unfolds, what keeps it going and whether it helps us respond to our circumstances.

What psychologists mean by overthinking

Overthinking is an everyday expression, rather than a diagnosis. Two better-defined research concepts are rumination and worry. Rumination commonly involves repeatedly dwelling on distress, its causes or its implications. Worry often involves anticipating uncertain future threats. Both can become repetitive, difficult to disengage from and dominated by negative possibilities (Moulds & McEvoy, 2025).

Rumination is often illustrated by looking backwards: Why did that happen? What does it say about me? Worry is often illustrated by looking forwards: What if this happens? How would I cope? These are tendencies, not rigid boundaries. A person can move between them within the same train of thought.

Researchers use repetitive negative thinking to describe their shared features. This approach examines a process that can occur across different mental-health difficulties, rather than assigning every kind of thinking to a separate diagnosis (Ehring & Watkins, 2008). Recognising a familiar pattern does not establish that someone has a disorder.

When reflection becomes a loop

Returning to a difficult experience can help us understand it. Reflection may clarify a feeling, reveal an overlooked perspective or prepare us for a future conversation. Research on repetitive thought shows that its consequences depend partly on its content, context and level of abstraction (Watkins, 2008).

A useful distinction concerns flexibility and direction. Can the thinking take account of new information? Does it generate a more specific understanding, support emotional processing or lead towards a decision? Can you leave it for a while? A repetitive loop tends to revisit the same judgements while making disengagement increasingly difficult.

Three ways thinking about a difficult conversation might unfold

Pattern	Illustrative thought	Direction
Reflection	I interrupted. Next time I can pause and ask a question.	A specific understanding or possible response.
Rumination	Why am I always like this? What is wrong with me?	Repeated evaluation without a clearer response.
Worry	What if they think badly of me and everything changes?	An expanding chain of possible threats.

These examples illustrate patterns; they are not a screening tool. Reflection can remain painful, and understanding does not always arrive quickly. Grief, discrimination or an unresolved conflict may require sustained attention and support. Immediate relief or a practical solution is not the only worthwhile outcome of thinking.

Why the loop can feel necessary

People usually have reasons for returning to a concern. Repeated analysis may seem like a way to prevent mistakes, understand distress or avoid being caught unprepared. Reviews describe how beliefs about the usefulness of rumination, alongside learned habits and unresolved goals, can help maintain it (Watkins & Roberts, 2020).

Consider waiting for an important decision. Thinking through every possible outcome can feel responsible. However, if no further information is available, additional analysis may keep generating possibilities without making the outcome more predictable. Stopping may then feel uncomfortable because the uncertainty is still present.

Rumination can also become a familiar response to particular situations or moods. Understanding this pattern involves noticing its triggers and consequences, including what happens to activity, contact with other people and opportunities to respond differently. A habit account offers a way to investigate the process; it does not imply that someone deliberately chooses distress.

This has a connection with how avoidance can keep anxiety going. A response that initially feels protective can sometimes restrict useful learning or action. That possibility needs to be explored in context, rather than assumed whenever someone thinks carefully about a problem.

What attention and cognitive control add

Disengaging from a concern involves more than deciding that it is unhelpful. A meta-analysis found a small association between repetitive negative thinking and difficulty discarding information that was no longer relevant from working memory. It did not establish a general impairment across all the cognitive-control functions examined (Zetsche et al., 2018).

This finding points towards a possible part of the explanation, with substantial limits. An association does not establish whether a cognitive difficulty causes repetitive thinking, results from it or shares other influences. Group-level task performance cannot explain an individual's experience or measure their willpower.

How rumination and worry relate to mental health

Rumination has a well-established relationship with depression. A major review describes evidence that it can intensify negative thinking, interfere with problem-solving and make effective action harder. Longitudinal findings also link rumination with subsequent depressive difficulties (Nolen-Hoeksema et al., 2008).

However, rumination is not confined to depression, and worry is not confined to anxiety. Contemporary reviews describe overlapping repetitive-thinking processes across several clinical presentations (Moulds & McEvoy, 2025). This helps explain why a clinician may explore the way a person responds to thoughts alongside their specific symptoms.

These relationships require care. A prospective association is stronger evidence than a single questionnaire completed at one time, but it still leaves questions about shared influences and direction of effects. Distress can prompt repetitive thinking, while repetitive thinking may contribute to ongoing distress. Neither observation means that thinking patterns explain every cause of a mental-health difficulty.

External circumstances remain relevant. Someone facing debt, insecure housing or repeated mistreatment may need practical assistance and changes in their environment. Psychological support can address a thinking pattern while taking those circumstances seriously. An individual psychological formulation can help bring these influences together.

Why forcing thoughts away can backfire

The instruction to stop thinking about something can create another task: checking whether the unwanted thought is still there. Research on deliberate thought suppression finds that thoughts can recur after suppression attempts. A quantitative review found a small average rebound effect, alongside variation between studies and clinical groups (Magee et al., 2012).

This does not mean every attempt to redirect attention is harmful or that a returning thought proves something is wrong. Choosing to attend to a conversation, a task or the surrounding environment differs from treating the complete disappearance of a thought as a requirement.

A more workable aim may be to notice that the thought is present and decide how to respond. Its recurrence does not necessarily require another round of analysis.

Changing the response to repetitive thinking

The following ideas draw on psychological research and NHS self-help guidance. They are options to explore, rather than a treatment programme or a promise that distress will disappear.

Notice the process as well as the topic

Ask what has changed during the last few minutes of thinking. Have you learned anything, identified a feeling more clearly or moved towards a decision? Or are you rehearsing the same judgements? A brief note of the trigger, response and consequence can make the pattern easier to discuss. Habit-focused accounts of rumination emphasise understanding these circumstances (Watkins & Roberts, 2020).

Make the question more specific

Compare Why do I always get everything wrong? with What happened in this situation, and what is one thing I could do next? In an experiment involving depressed patients, concrete self-focus improved performance on a social problem-solving task relative to abstract self-focus (Watkins & Moulds, 2005). This supports investigating how a question is framed; it does not establish that changing one sentence treats depression.

Separate an actionable problem from a hypothetical threat

If there is something you can influence, define a manageable step: gather a missing document, arrange a conversation or ask for advice. The NHS distinguishes practical problems from hypothetical worries and recommends working through possible solutions and a plan (NHS, n.d.-b). Some problems also require help from other people or services.

Practise returning attention without demanding certainty

The NHS suggests setting aside a short period for worries and returning to the present when they arise at other times. This can include writing concerns down and considering whether action is possible (NHS, n.d.-c). For example, you might note an unanswered question, decide when to revisit it and return to the activity in front of you. Revisiting it later remains an option.

What psychological treatment can offer

When repetitive thinking is persistent and disruptive, psychological treatment can examine it more systematically. Cognitive behavioural approaches may address interpretations, behaviour and responses to uncertainty. Treatment can also focus on what a person does when repetitive thinking begins, rather than examining every thought as a separate problem.

Rumination-focused cognitive behavioural therapy was developed to address these patterns directly. In an early randomised trial involving 42 people with residual depression, adding it to usual care improved depressive symptoms and remission rates. The comparison did not control for the extra attention involved in receiving therapy, so the trial could not isolate the effects of its specific components (Watkins et al., 2011).

A later trial of 131 outpatients compared group rumination-focused CBT with group CBT, both alongside routine medical management. It found a post-treatment advantage for rumination-focused CBT on the primary measure of observer-rated depressive symptoms (Hvenegaard et al., 2020). This offers a more demanding comparison, while remaining evidence from a particular treatment setting and population.

Mindfulness-based approaches offer another route for some people. A systematic review found reduced depressive rumination compared with usual care, but the small set of comparisons against other active treatments did not establish superiority (Perestelo-Perez et al., 2017). Evidence for structured interventions should not be treated as evidence that any meditation exercise or commercial app will have the same effect.

How strong is the evidence?

A 2025 meta-analysis included 55 randomised studies with 4,970 adult participants who had diagnosed mental-health conditions. Across the included cognitive behavioural interventions, repetitive negative thinking improved by a moderate amount relative to control groups. Interventions explicitly targeting repetitive thinking showed larger average effects (Stenzel et al., 2025).

However, results varied substantially between studies, and indicators of publication bias suggested that benefits might be overestimated. Effects were smaller against active comparison treatments than against passive controls. The apparent advantage of targeted interventions came from comparisons across studies, rather than every participant being randomly assigned between targeted and general treatment. Most targeted interventions addressed worry. The findings therefore do not establish one universally superior therapy for rumination.

Measurement also matters. Questionnaires capture people's reports about their thinking, laboratory tasks investigate narrower processes, and treatment trials evaluate packages containing several components. Each adds evidence, but none provides a complete account of an individual's daily experience.

Knowing when to seek support

Support is worth considering when repetitive thinking regularly disrupts sleep, work, study or relationships, or occurs alongside ongoing anxiety or low mood. A GP or appropriately qualified mental-health professional can help assess the wider picture. The relationship between thinking, rest and distress is also explored in When Sleep Changes the Mind.

In England, adults can self-refer to NHS Talking Therapies for anxiety and depression, subject to the service's eligibility requirements. Routes and services differ elsewhere in the UK (NHS, n.d.-a).

Making room for a different response

Thinking carefully is valuable. The difficulty arises when thinking becomes so repetitive and inflexible that it crowds out understanding, connection or action. Recognising that pattern creates a useful question: what response would help in this situation? Sometimes the answer is a practical step, sometimes a conversation, and sometimes allowing an unanswered question to remain while returning to something that matters.

About this article: This is an educational overview of research, rather than an individual assessment or treatment plan. The examples are illustrative and do not describe identifiable people.

References

Ehring, T., & Watkins, E. R. (2008). Repetitive negative thinking as a transdiagnostic process. International Journal of Cognitive Therapy, 1(3), 192–205. https://doi.org/10.1521/ijct.2008.1.3.192

Hvenegaard, M., Moeller, S. B., Poulsen, S., Gondan, M., Grafton, B., Austin, S. F., Kistrup, M., Rosenberg, N. G. K., Howard, H., & Watkins, E. R. (2020). Group rumination-focused cognitive-behavioural therapy (CBT) v. group CBT for depression: Phase II trial. Psychological Medicine, 50(1), 11–19. https://doi.org/10.1017/S0033291718003835

Magee, J. C., Harden, K. P., & Teachman, B. A. (2012). Psychopathology and thought suppression: A quantitative review. Clinical Psychology Review, 32(3), 189–201. https://doi.org/10.1016/j.cpr.2012.01.001

Moulds, M. L., & McEvoy, P. M. (2025). Repetitive negative thinking as a transdiagnostic cognitive process. Nature Reviews Psychology, 4(2), 127–141. https://doi.org/10.1038/s44159-024-00399-6

NHS. (n.d.-a). Find NHS talking therapies for anxiety and depression. https://www.nhs.uk/nhs-services/mental-health-services/find-nhs-talking-therapies-for-anxiety-and-depression/

NHS. (n.d.-b). Problem solving. https://www.nhs.uk/every-mind-matters/mental-wellbeing-tips/self-help-cbt-techniques/problem-solving/

NHS. (n.d.-c). Tackling your worries. https://www.nhs.uk/every-mind-matters/mental-wellbeing-tips/self-help-cbt-techniques/tackling-your-worries/

Nolen-Hoeksema, S., Wisco, B. E., & Lyubomirsky, S. (2008). Rethinking rumination. Perspectives on Psychological Science, 3(5), 400–424. https://doi.org/10.1111/j.1745-6924.2008.00088.x

Perestelo-Perez, L., Barraca, J., Peñate, W., Rivero-Santana, A., & Alvarez-Perez, Y. (2017). Mindfulness-based interventions for the treatment of depressive rumination: Systematic review and meta-analysis. International Journal of Clinical and Health Psychology, 17(3), 282–295. https://doi.org/10.1016/j.ijchp.2017.07.004

Stenzel, K. L., Keller, J., Kirchner, L., Rief, W., & Berg, M. (2025). Efficacy of cognitive behavioral therapy in treating repetitive negative thinking, rumination, and worry – a transdiagnostic meta-analysis. Psychological Medicine, 55, Article e31. https://doi.org/10.1017/S0033291725000017

Watkins, E. R. (2008). Constructive and unconstructive repetitive thought. Psychological Bulletin, 134(2), 163–206. https://doi.org/10.1037/0033-2909.134.2.163

Watkins, E. R., Mullan, E., Wingrove, J., Rimes, K., Steiner, H., Bathurst, N., Eastman, R., & Scott, J. (2011). Rumination-focused cognitive-behavioural therapy for residual depression: Phase II randomised controlled trial. The British Journal of Psychiatry, 199(4), 317–322. https://doi.org/10.1192/bjp.bp.110.090282

Watkins, E. R., & Roberts, H. (2020). Reflecting on rumination: Consequences, causes, mechanisms and treatment of rumination. Behaviour Research and Therapy, 127, Article 103573. https://doi.org/10.1016/j.brat.2020.103573

Watkins, E., & Moulds, M. (2005). Distinct modes of ruminative self-focus: Impact of abstract versus concrete rumination on problem solving in depression. Emotion, 5(3), 319–328. https://doi.org/10.1037/1528-3542.5.3.319

Zetsche, U., Bürkner, P.-C., & Schulze, L. (2018). Shedding light on the association between repetitive negative thinking and deficits in cognitive control – A meta-analysis. Clinical Psychology Review, 63, 56–65. https://doi.org/10.1016/j.cpr.2018.06.001