To stop overthinking, first work out which kind of loop you are in: rumination replays something that already happened, and worry rehearses something that might. Then move the thought from abstract questions (“why does this always happen to me?”) to concrete ones (“what exactly happened, and what is the next step?”), give the worry a set time and place, and check how often your predictions come true.
Key Takeaways
- Repetitive thinking is not always a problem. A review by Edward Watkins found it is linked with better planning and recovery when it stays concrete, and with depression and anxiety when it stays abstract and evaluative.
- Rumination dwells on the past and on “why”; worry runs through “what if” futures. Both respond to the same move: turn the question into a specific “how”.
- Postponing worry to a set time did no better than just recording worries in a large online trial, but in a later trial people who added an if-then plan worried less than those who postponed without one.
- In a study of people with generalised anxiety disorder, 91.4% of the worries they tracked did not come true.
- If the worry is hard to control on most days for months, or it is affecting sleep, work or relationships, talk to a doctor or therapist.
What is overthinking?
Overthinking is thinking about the same problem over and over without getting closer to an answer or an action. Psychologists call it repetitive thought and split it into two main forms. Rumination circles around something that already happened and asks why. Worry runs through things that might go wrong and asks what if. Ordinary problem-solving also repeats, but it ends in a decision or a next step.
| Rumination | Worry | Problem-solving | |
|---|---|---|---|
| Time focus | Mostly the past | Mostly the future | The present problem |
| Typical question | ”Why did I say that?" | "What if it goes wrong?" | "What do I do next?” |
| Level of detail | Abstract, about you | Abstract, about outcomes | Concrete, about steps |
| How it ends | It does not; it restarts | It does not; a new “what if” appears | A decision, a plan or an action |
The past-and-future split is a rule of thumb rather than a strict definition. The row that matters is the last one: if the thinking keeps restarting instead of ending in a step, it has stopped working for you.
Why do I overthink everything?
Most people get stuck because the mind is doing a normal job badly. It scans for threats and tries to solve problems in advance, and when a problem has no clear answer, the search keeps going. Uncertainty, high stakes and tiredness all make it worse, and so does the habit of asking abstract questions that have no possible answer.
That last point comes from Watkins’ 2008 review of repetitive thought in Psychological Bulletin. He found that the same amount of thinking can help or harm depending on how it is done. Thinking about the “why” of an event, in an abstract and evaluative way, was linked with depression and anxiety. Thinking about the “how”, the specific details and steps, was linked with recovery from upsetting events and with better planning. “Why am I so bad at this?” has no answer you can act on, so the mind keeps asking it.
There is a cost. A 2008 review by Susan Nolen-Hoeksema and colleagues summarised evidence that rumination makes depression worse, increases negative thinking and impairs problem-solving, and that it is also linked with anxiety, binge eating and binge drinking. Some of that evidence comes from experiments, but the link with depression over time is mostly correlational.
How to stop overthinking: 7 steps
Seven techniques help: name the loop, switch from “why” to “how”, turn the thought into a next step, postpone worry with a plan, talk to yourself by name, test your predictions, and practise mindfulness or do something absorbing. Each step below says what the research found; steps 1 and 3 are practical habits rather than tested techniques.
1. Name the loop
When you catch yourself going round in circles, say what kind of loop it is: “I’m replaying the meeting” or “I’m running worst cases about the move”. Naming it puts a little distance between you and the content, and tells you which of the next steps fits. Replaying calls for step 2; “what if” thinking calls for steps 3 and 4.
2. Switch from “why” to “how”
Rewrite the question your mind keeps asking into a concrete one. “Why do I always mess up presentations?” becomes “What exactly happened in the first two minutes, and what will I do differently in the first two minutes next time?” Watkins and colleagues turned this into a structured exercise called concreteness training and tested it in a 2012 trial with 121 adults with major depression. Adding it to usual care improved symptoms more than usual care alone, and it reduced rumination more than relaxation training did, though it was no better than relaxation for overall symptoms. That was a clinical group, so treat it as promising rather than proven for everyday loops.
3. Turn the thought into a next step
Ask one question of any loop: is there something I can do about this? If yes, write the next physical action down, as small as you can make it, and decide when you will do it. If no, the thought belongs to step 4 or step 7. A brain dump does this for several loops at once.
4. Postpone the worry, with a plan
Worry postponement means choosing a 15 to 30 minute slot each day for worrying, and when a worry turns up outside that slot, noting it and leaving it for later. The idea goes back to Thomas Borkovec’s work on stimulus control in 1983.
The evidence is more mixed than most articles admit. In a 2016 online trial with 361 completers from the general public, people who postponed their worries for six days did no better on worry frequency or duration than people who only recorded them, and many said postponing was hard. In a 2025 trial with 186 adults, people who also made specific if-then plans for when and how to postpone (for example, “if I start worrying during the day, then I will write it down and save it for 6 pm”) reported worrying about 15 minutes less than those who postponed without a plan. If you try it, write the plan down first.
5. Talk to yourself by name
When a loop starts, try addressing yourself in the second or third person: “Sam, you have prepared for this; what is the next thing to check?” Ethan Kross and colleagues tested this in seven studies with 585 participants. In the experiments on making a good first impression and on public speaking, people who thought about themselves using their own name or “you” instead of “I” performed better according to independent raters and showed less distress, and after the speech they spent less time replaying it. These were short lab tasks, but the technique costs nothing and you can use it on the spot.
6. Test your predictions
Keep a short log: write down the worry, what you predict will happen, and later, what did happen. In a 2020 study by Lucas LaFreniere and Michelle Newman, 29 people with generalised anxiety disorder did this for 10 days and tracked the outcomes over the following 30 days. Of the worries they recorded, 91.4% did not come true, and the most common result for a single participant was that none of their worries came true. The sample was small and every participant had an anxiety diagnosis, so the figure says nothing about everyone’s worries. What carries over is the method: your own log shows how reliable your predictions are.
7. Practise mindfulness, or do something absorbing
Mindfulness practice trains you to notice a thought and let it pass without following it. A 2017 meta-analysis of 11 studies in people with depression found mindfulness-based programmes reduced rumination by a moderate amount compared with usual care (g = -0.59), although they were no better than other active treatments. If sitting with the thought is too hard, an activity that fully occupies your attention also helps: Nolen-Hoeksema’s review cites dozens of experiments showing that positive distraction relieves low mood. A walk, a game, cooking from a recipe or a conversation about something else all count.
How to stop overthinking at work
At work the loop usually attaches to unfinished tasks, a comment from a manager or a decision you have to make. Three habits help: close the day with a fixed routine that writes down where each task stands, schedule decisions rather than leaving them open, and keep a list for everything you are waiting on so your memory does not have to.
In a 2017 trial on recovery from work, the 60 people who completed an online mindfulness course reported less work-related rumination and fatigue and better sleep than 58 people on a waiting list, and the gains held at three and six months. The measures were self-reported and the comparison was a waiting list, so the size of the effect is uncertain.
A shutdown ritual gives unfinished tasks a written place to wait, which removes one common trigger for evening replaying, and our article on open loops explains why unfinished tasks pull at attention. If the loop is about one decision, our guide to analysis paralysis has a step-by-step method for it.
When is repetitive worry a sign of anxiety or depression?
Occasional worry and replaying are normal. It is worth talking to a doctor or therapist when the worry is hard to control most days, when it has gone on for months, or when it is affecting your sleep, work or relationships. Rumination is also closely linked with depression, so persistent low mood alongside it is another reason to get help.
The US National Institute of Mental Health describes generalised anxiety disorder as feeling extremely worried or nervous more often or more intensely than the situation calls for, and says diagnosis requires finding worry difficult to control on most days for at least six months. The NHS puts it more plainly: anxiety is more likely to be generalised anxiety disorder if you feel anxious most of the time and it affects your everyday life. A 2013 systematic review of 19 studies concluded that mindfulness-based and cognitive behavioural treatments may reduce both rumination and worry. If your thoughts race mainly at night and you have ADHD, our article on ADHD racing thoughts covers that pattern.
How FocusBox can help
FocusBox is a planning and focus app for the web and for iPhone and iPad. It helps with the steps that turn thinking into doing.
When a vague worry hides a real task, describe it to the AI to-do list generator, which turns a description of a goal into a list of concrete steps (step 3 above). To stop a decision from spreading across the whole day, give it a fixed block with one of FocusBox’s timers and decide when the time is up.
Frequently Asked Questions
What is the main cause of overthinking?
There is rarely one cause. It usually starts with uncertainty about something that matters to you, and it keeps going when the questions you ask are abstract (“why does this happen to me?”) and have no answer you can act on. Stress, tiredness, anxiety and low mood all make the loop more likely and harder to leave.
Is overthinking a mental illness?
No. Everyone does it at times, and there is no diagnosis by that name. It is sometimes a symptom of a condition: worry that is hard to control on most days for at least six months is part of generalised anxiety disorder, and rumination is closely linked with depression. If it affects your daily life, talk to a doctor.
How do I stop overthinking in the moment?
Notice and name what your mind is doing (“I’m replaying the meeting”), then ask whether there is a next step you can take. If there is, write it down and decide when to do it. If there is not, talk to yourself by name (“Alex, you have done what you can”) or switch to an activity that takes your full attention, such as a walk, a call or a task with clear steps.
What is the difference between rumination and worry?
Rumination is repetitive thinking about something that already happened, usually about why it happened and what it says about you. Worry is repetitive thinking about what might go wrong in the future. Both are kinds of repetitive thinking, both tend to be abstract, and both ease when you turn them into specific questions about what to do next.
Can repetitive thinking ever be useful?
Repeated thinking is useful when it is concrete and leads somewhere: rehearsing the steps of a hard conversation, planning for a likely problem or working through an upsetting event in detail. A 2008 review by psychologist Edward Watkins linked this kind of thinking with better planning and recovery. It stops being useful when it repeats the same abstract questions without producing a decision or an action.
Sources
- Watkins. Constructive and unconstructive repetitive thought (Psychological Bulletin, 2008; accessed November 2026)
- Nolen-Hoeksema, Wisco and Lyubomirsky. Rethinking rumination (Perspectives on Psychological Science, 2008; accessed November 2026)
- Watkins et al. Guided self-help concreteness training as an intervention for major depression in primary care: a Phase II randomized controlled trial (Psychological Medicine, 2012; accessed November 2026)
- Borkovec, Wilkinson, Folensbee and Lerman. Stimulus control applications to the treatment of worry (Behaviour Research and Therapy, 1983; accessed November 2026)
- Versluis, Verkuil and Brosschot. Reducing worry and subjective health complaints: a randomized trial of an internet-delivered worry postponement intervention (British Journal of Health Psychology, 2016; accessed November 2026)
- McCarrick, Prestwich, Ferguson and O’Connor. Effects of worry postponement on daily worry and sleep: a randomised controlled trial (Psychology and Health, 2025; accessed November 2026)
- Kross et al. Self-talk as a regulatory mechanism: how you do it matters (Journal of Personality and Social Psychology, 2014; accessed November 2026)
- LaFreniere and Newman. Exposing worry’s deceit: percentage of untrue worries in generalized anxiety disorder treatment (Behavior Therapy, 2020; accessed November 2026)
- Perestelo-Pérez et al. Mindfulness-based interventions for the treatment of depressive rumination: systematic review and meta-analysis (International Journal of Clinical and Health Psychology, 2017; accessed November 2026)
- Querstret and Cropley. Assessing treatments used to reduce rumination and/or worry: a systematic review (Clinical Psychology Review, 2013; accessed November 2026)
- Querstret, Cropley and Fife-Schaw. Internet-based instructor-led mindfulness for work-related rumination, fatigue, and sleep (Journal of Occupational Health Psychology, 2017; accessed November 2026)
- National Institute of Mental Health. Generalized Anxiety Disorder: What You Need to Know (nimh.nih.gov, accessed November 2026)
- NHS. Generalised anxiety disorder (GAD) (nhs.uk, accessed November 2026)