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Complete guide · Mental states and traits

OverthinkingWhat it is, whether it is a mental illness, and why the mind goes around in the same circle

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 7-minute read
The short answer

Overthinking is going around the same thoughts again and again without reaching a solution or decision, either by ruminating on what happened in the past or by worrying about what might happen. It is not a separate psychiatric diagnosis; it is a common thinking pattern that shows up in many conditions, most notably depression and anxiety, and it may raise their risk if it continues. This pattern can be changed with training and cognitive behavioral therapy.

  • Useful thinking ends in a step; overthinking repeats itself with no result.
  • Trying to suppress a thought by force can make it come back stronger.
  • If it comes with persistent sadness, compulsive rituals or severe insomnia, it needs an assessment.

What is overthinking?

You put your head on the pillow and the questions begin: why did I say that? What if I lose my job? Did he mean something by his message? An hour or two later you are still in the same place, with no answer and no sleep. This is overthinking: repeated preoccupation with the same thoughts that produces neither a decision nor a solution, and only adds tension the longer it goes on.

Researchers call it “repetitive negative thinking,” and it usually takes two forms: rumination, which is re-analyzing the past, blaming yourself for it and asking “why am I like this?”, and worry, which is a chain of “what if?” about a future that has not yet happened. The two forms often trade places in the same person within a single day.

When is thinking useful and when does it become excessive?

Not all repetitive thinking is a problem. In a wide review published by researcher Edward Watkins in Psychological Bulletin, repetitive thought was found to have two faces: a helpful one that aids recovery from painful events, planning, preparation and adopting healthy behaviors, and a harmful one linked to depression, anxiety and physical health problems. According to the review, factors that determine which face prevails include whether the content of the thinking is negative or positive, the context in which it occurs, and whether it is abstract and general or specific and concrete.

The difference between useful thinking and overthinking
Useful thinkingOverthinking
The question it asks“What is the next step?”“Why did this happen?” and “What if?”
Its levelSpecific and concreteGeneral, abstract and growing
Its durationHas a beginning and an endReturns again and again with no clear end
Its resultA decision, a plan or acceptanceTension, exhaustion and postponing
Its effect on sleepUsually ends before sleepIntensifies at night and delays sleep

Is overthinking a mental illness?

There is no diagnosis called “overthinking” in medical classifications. But it is a transdiagnostic thinking pattern, meaning it appears in many disorders: in depression rumination and self-blame predominate, in generalized anxiety disorder excessive worry that is hard to control predominates, and in OCD unwanted disturbing thoughts intrude on the mind and the person tries to neutralize them with rituals. It is also linked to insomnia.

A review by Susan Nolen-Hoeksema and her colleagues indicates that rumination is linked not only to depression but also to anxiety, binge eating, heavy drinking and self-harm. So the question worth asking is: “Is the overthinking part of a condition that needs diagnosis and treatment?”

How does the overthinking cycle work?

Overthinking goes around in a loop that feeds itself, and each stage has a signal you can catch:

  1. 1
    The spark

    A small incident: an unanswered message, a comment at work, or a minor physical symptom.

  2. 2
    The first question

    “What if?” or “Why?”, followed by a possible negative interpretation.

  3. 3
    Escalation

    One scenario after another, and the body tenses so the threat seems bigger.

  4. 4
    Trying to control it

    More analysis, asking for reassurance, and reviewing the situation again and again.

  5. 5
    The return

    A short relief and then the thought returns, bringing more tiredness and less confidence.

Infographic of the overthinking cycle: the spark → the first question → escalation → trying to control it → the return
The vicious circle in overthinking: the spark, then the first question, then escalation, then trying to control it, then the return

The irony is that every attempt to “settle” the thought with more thinking gives it fresh fuel. That is why treatment approaches focus on getting out of the circle, not on winning the argument inside it.

Why doesn't telling yourself “don't think about it” work?

In a famous experiment published by Daniel Wegner and colleagues in 1987, participants were asked not to think about a “white bear” for five minutes and could not. When they were later allowed to think about it, they thought about it more than those who had been asked to think about it from the start. Participants who were given a specific alternative thought to focus on while suppressing were less preoccupied with the bear afterward.

The practical lesson: forced suppression backfires, while directing attention to a specific alternative activity or thought helps. Exercises for treating overthinking are built on this.

Symptoms of overthinking in brief

Overthinking shows up as thoughts that repeat and never end, long hesitation over decisions, repeated requests for reassurance, and difficulty sleeping because the mind is active at night, along with physical effects such as headaches, muscle tension and fatigue. Detailed signs and non-diagnostic self-assessment questions are in overthinking symptoms and signs.

Causes of overthinking in brief

Its causes overlap among a temperament inclined to anxiety, perfectionism and difficulty tolerating uncertainty, earlier painful experiences, present stress, and habits that feed it such as lack of sleep and late nights on screens, along with mental health conditions such as anxiety and depression. The details and what research says are in causes of overthinking.

Overthinking treatment in brief

Overthinking can be changed with daily exercises such as setting aside a fixed worry time, writing, and changing the question from “why?” to “what is the next step?”. A systematic review by Querstret and Cropley suggests that mindfulness-based interventions and cognitive behavioral therapy may reduce rumination and worry together. The full steps and the role of medication are on the overthinking treatment page.

Is overthinking dangerous?

Overthinking in itself is not dangerous, but continuing it has a cost. In a study by Susan Nolen-Hoeksema published in 2000 in the Journal of Abnormal Psychology, rumination predicted the onset of new depressive episodes, and anxiety symptoms as well. Her later review summarizes that rumination increases negative thinking, weakens problem-solving, blocks action, and over time weakens social support. Physically, a review by Brosschot and colleagues suggests that worry and rumination prolong the activation of the stress response in the heart, glands and immune system.

Because overthinking steals sleep and raises tension, some people turn to sleeping pills, sedatives or cannabis to “quiet the brain.” This is a solution that starts out comforting and often ends in dependence, and with withdrawal the thinking comes back worse. If you have reached this stage, read about dual diagnosis.

When do you need a psychiatrist because of overthinking?

  • The overthinking has lasted weeks and consumes hours of your day.
  • Sleep has become difficult most nights.
  • It comes with sadness, loss of enjoyment or a feeling of worthlessness.
  • Intrusive thoughts have appeared that push you into repeated rituals such as washing or checking.
  • You have started relying on pills or substances to calm your mind.
  • You have had thoughts about death or harming yourself, in which case help is urgent.

At Eradah you can talk to a specialist in complete confidentiality through the outpatient clinics, to determine whether anxiety, depression or something else is behind the overthinking, and then build a plan that suits you.

Overthinking Guide: Everything You Need to Know

We have gathered everything about overthinking into 3 pages, each answering one question in detail. Choose what you are looking for:

When thinking turns into thoughts about death: ask for help now

  • Repeated thoughts about death, that life is not worth living, or that the person is a “burden” on those around them
  • Severe hopelessness and a feeling that the thoughts will never stop and there is no way out
  • Almost completely stopping sleeping or eating for several days
  • Overusing sleeping pills or sedatives, or mixing them with alcohol, to “quiet the brain”
  • Strange thoughts, intense suspicion or hearing voices that others do not hear

Do not leave the person alone. Ask them calmly and directly how they feel and what they are thinking, and listen without blame or lectures; asking directly does not plant the idea, it opens the door to help. Call an ambulance on 123 or take them to the nearest emergency room, or call the mental health support line 16328 (24 hours), and keep medications and anything they could use to harm themselves out of reach.

Ambulance 123 Mental health support line 16328
Frequently asked questions

Frequently asked questions about overthinking

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Is overthinking a mental illness?

It is not a separate diagnosis in medical classifications, but a common thinking pattern that appears in depression, generalized anxiety, OCD and insomnia, and it needs assessment if it is severe and persistent or affects life.

What is the difference between rumination and worry?

Rumination is repeated preoccupation with the past and its causes and with self-blame, and is more linked to depression. Worry is a chain of “what if?” about the future, and is more linked to anxiety disorders. Both are forms of overthinking.

What is the difference between overthinking and OCD?

In OCD, unwanted disturbing thoughts intrude on the mind, the person finds them strange, and carries out acts or rituals to neutralize them. Overthinking is going around real concerns such as work and relationships, without rituals.

Does overthinking cause depression?

It does not cause it on its own, but studies have found that rumination predicts the onset of new depressive episodes and anxiety symptoms, so it deserves to be dealt with early.

Is overthinking a sign of intelligence?

It is not a sign of intelligence or of its absence. Deep thinking can be useful, but what marks overthinking is repetition without result, and it is a pattern that affects people of all abilities.

Can overthinking be gotten rid of for good?

Thoughts cannot be stopped completely, and that is not a realistic goal, but overthinking can be greatly reduced and its rounds shortened with exercises, cognitive behavioral therapy, mindfulness, and treatment of anxiety or depression if present.

Is overthinking a habit or a fixed trait?

It is closer to a mental habit that is reinforced by repetition and intensifies under stress, and temperament and experiences may contribute. Because it is a habit, it can be changed with training, as other habits can.

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