Why do I overthink so much?

Cleveland Clinic says overthinking can be a symptom of stress, anxiety or depression. It notes that anxiety tends to be more future-oriented, and a psychotherapist it quotes says that overthinking about the past is more connected with depression. Below is what research links it to, why the loop feels worth continuing, and a tool to try for each kind of loop.

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A stressful stretch can turn it up

In two studies that followed 1,065 young teenagers for 7 months and 1,132 adults for 12 months, people who reported more stressful life events went on to ruminate more.

Worth asking yourself: did the looping get louder around a particular change, such as a new job, a breakup, money trouble or a family illness? If so, note it next to the thought: knowing when the loop began is useful context for any tool on this site, and for a doctor if you see one.

When uncertainty feels threatening: a model from generalized anxiety

One model of the worry seen in generalized anxiety (GAD) holds that people with GAD find uncertain situations especially threatening, and cope by thinking through a range of bad outcomes: they worry to feel more certain and in control.

A quick test: what would you need to know for this thought to stop? If the answer is something nobody can know yet, such as whether you got the job or what they will decide, more thinking will not produce it. The worry tree sorts that kind of worry from one you can act on today.

It feels like you are solving something

Thinking and rethinking about what bothers you can feel like problem-solving, but this habit usually does not bring any resolution.

Research on rumination finds that it enhances negative thinking and impairs problem solving.

One way to tell the difference: after twenty minutes, do you have a next step written down? If not, you have been circling. When the loop is a choice you cannot make, the decision breaker turns it into options and a deadline.

When the replay is about a social moment

Going over a social situation again and again afterwards, and reconstructing how you came across, is known in research as "post-event processing".

In studies of the "spotlight effect", people overestimated how much others noticed their appearance, and how prominent their own comments were in a group discussion.

If every chat, meeting or party gets a second showing in your head, the conversation replay takes one of them through to an end point.

What helps, loop by loop

If the looping comes with a low mood that will not lift, or it is getting in the way of work, sleep or people, see “When to get help” below rather than another tool.

Questions people ask

Is overthinking a sign of anxiety or depression?

It can be, but it is not proof of either. According to Cleveland Clinic, overthinking is not a recognized mental health condition, but it can be a symptom of depression or anxiety. More in what is overthinking.

Can I just make myself stop thinking about it?

Instead of ordering the thought to leave, give it somewhere to go: a line on a worry list, a set time later in the day, or a sheet of paper you can fold away.

Why is it worse at night?

Night loops have their own page: the night brain dump takes five minutes and moves the thoughts out of your head and onto a list before you try to sleep again.

When to get help

These are self-help tools, not medical advice or a diagnosis. Talk to a doctor, or to one of the lines below, if:

  • you have thoughts of harming yourself (see the lines below).
  • you feel low or hopeless, and it is not lifting. The NHS suggests seeing a GP if you have had a low mood for more than 2 weeks, or if the things you are trying yourself are not helping.
  • the worry is getting in the way of your daily life. The NHS suggests talking to a GP if anxiety is affecting your daily life.
  • the thoughts feel unwanted and push you to check things or ask for reassurance again and again. OCD involves unwanted, intrusive thoughts that keep coming back, and compulsions such as asking for reassurance or checking. The NHS says it is important to get help if it has a significant impact on your life.

Lines you can call

  • US:988 Suicide & Crisis LifelineCall or text 988Free and confidential, 24/7. You can also chat at 988lifeline.org.
  • UK & Ireland:Samaritans116 123Free to call, day or night.
  • England:NHS 111111, mental health optionUrgent help from the NHS when it is not an emergency.

In the US, in life-threatening situations, call 911. In the UK, if someone's life is at risk, call 999 or go to A&E. For urgent help in England, use NHS 111 online or call 111 and choose the mental health option. Elsewhere, call your local emergency number.

Sources

  1. How To Stop Overthinking: Tips and Coping Strategies. Cleveland Clinic Health Essentials. clevelandclinic.org
  2. Michl LC, McLaughlin KA, Shepherd K, Nolen-Hoeksema S (2013). Rumination as a mechanism linking stressful life events to symptoms of depression and anxiety: longitudinal evidence in early adolescents and adults. Journal of Abnormal Psychology 122(2):339–352. PMID 23713497
  3. Kelso KC, Gros DF (2024). Intolerance of uncertainty on distress and impairment: The mediating role of repetitive negative thinking. Journal of Psychopathology and Behavioral Assessment. PMC11378962
  4. Overthinking Disorder: Is It a Mental Illness? Cleveland Clinic Health Essentials. clevelandclinic.org
  5. Nolen-Hoeksema S, Wisco BE, Lyubomirsky S (2008). Rethinking Rumination. Perspectives on Psychological Science 3(5):400–424. PMID 26158958
  6. Brozovich F, Heimberg RG (2008). An analysis of post-event processing in social anxiety disorder. Clinical Psychology Review 28(6):891–903. PMID 18294745
  7. Gilovich T, Medvec VH, Savitsky K (2000). The spotlight effect in social judgment: an egocentric bias in estimates of the salience of one's own actions and appearance. Journal of Personality and Social Psychology 78(2):211–222. PMID 10707330
  8. Low mood, sadness and depression. NHS. nhs.uk
  9. Anxiety. NHS Every Mind Matters. nhs.uk
  10. Symptoms - Obsessive compulsive disorder (OCD). NHS. nhs.uk
  11. Where to get urgent help for mental health. NHS. nhs.uk
  12. Suicide Prevention. National Institute of Mental Health (NIMH). nimh.nih.gov
  13. 988 Suicide & Crisis Lifeline. 988 Suicide & Crisis Lifeline. 988lifeline.org
  14. Contact a Samaritan. Samaritans. samaritans.org

Sources checked claim by claim by an AI review. Approved for publishing by Oleksii Y. on 2026-10-05.

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