What is overthinking?
Overthinking comes in two main forms: rumination, repetitive thinking about past events, mistakes or why you feel bad, and worry, repetitive thinking about possible future problems (“what if…”). Both are passive, circular and not problem-solving. Many people believe overthinking helps them prepare or understand, but research shows that rumination predicts depression and worry predicts anxiety.
Signs that you overthink
- Replaying conversations or events and criticising yourself.
- Running through worst-case scenarios.
- Difficulty making decisions, endless “pros and cons” without conclusions.
- Lying awake while your mind races.
- Feeling tense, tired and unable to switch off.
- Seeking reassurance repeatedly.
- Thinking about thinking: worrying that you worry too much.
Why we get stuck
- Beliefs about worry: “If I stop worrying, something bad will happen” or “worrying helps me cope”.
- Intolerance of uncertainty and perfectionism.
- Stress and tiredness reduce our ability to disengage.
- Anxiety and depression fuel thought loops.
- Avoiding feelings: thinking can be a way to avoid emotions.
- Habit: the more we ruminate, the more automatic it becomes.
Technique 1: notice, label and step back
Catch the thought and name it: “I’m ruminating” or “that’s worry”. Labelling activates the part of the brain involved in regulation and creates distance. Imagine thoughts as passing clouds, cars on a road or leaves on a stream. You do not have to argue with them or push them away; just notice them without following them. This skill is central in acceptance and commitment therapy (defusion) and mindfulness.
Technique 2: schedule worry time
Set aside 15–20 minutes at the same time every day (not near bedtime) to write down your worries. When worries appear at other times, jot them down briefly and postpone them until your scheduled time. Many people find that most worries lose urgency by then. During worry time, sort concerns into those you can act on and those you cannot.
Technique 3: turn worry into action
- Ask: “Is this something I can do something about today?”
- If yes, write the smallest next step and a time to do it.
- If no, practise accepting uncertainty: “I can’t know, and I can cope”.
- Replace “what if…” with “what is the most likely outcome, and how would I cope?”.
- Make decisions with a time limit and avoid endless searching for the perfect option.
- Reduce reassurance-seeking and checking.
Technique 4: shift attention to the present
- Grounding: name 5 things you see, 4 you hear, 3 you feel, 2 you smell, 1 you taste.
- Mindful breathing for a few minutes. See deep breathing for anxiety.
- Absorbing activity: a puzzle, music, cooking, a walk, a conversation, a hobby.
- Physical exercise, which interrupts rumination and improves mood.
- Single-tasking: do one thing with full attention.
Technique 5: look after the basics
Lack of sleep, caffeine, alcohol, skipped meals and inactivity make overthinking worse. Aim for 7–9 hours of sleep, regular meals, daily movement and time outdoors. Limit doom-scrolling and news, and take breaks from screens. See insomnia if thoughts keep you up at night.
Therapy for persistent overthinking
CBT helps challenge unhelpful thought patterns and change behaviours that maintain worry. Rumination-focused CBT and metacognitive therapy target the process of repetitive thinking and the beliefs about it; they have strong evidence for depression and anxiety. Acceptance-based therapies teach you to relate to thoughts differently. If overthinking affects your mood, sleep or relationships, a psychologist can help.
When to seek help
- Overthinking nearly every day for weeks.
- Low mood, loss of interest, hopelessness or thoughts of self-harm.
- Panic attacks, obsessions or compulsions.
- Persistent insomnia or physical stress symptoms.
- Difficulty functioning at work, studies or relationships.
Three common situations
Replaying an awkward conversation for days: label it as rumination, write down what you learned, and plan one small action (or let it go).
Lying awake planning for tomorrow: keep a notepad beside the bed, schedule worry time earlier and use slow breathing.
Unable to make a decision: set a deadline, decide on criteria and accept that no choice is perfect.
Overthinking decisions: a simple method
When stuck on a decision, define the problem in one sentence, list two or three realistic options, note the key criteria that matter to you, set a deadline, choose the “good enough” option and review it afterwards. Remind yourself that most decisions are reversible and that no one can predict outcomes with certainty. Asking a trusted friend for perspective can help, but avoid polling everyone.
Key points to remember
Overthinking is a habit that can be changed. Notice and label the loop, schedule worry time, move from worry to action or acceptance, shift attention to the present and look after your body. Seek therapy if it persists. Our psychology team can help.
This guide is for general information and does not replace an assessment by a qualified health professional.
Questions about overthinking
These answers are general information and do not replace an examination or individual medical advice.
Why do I overthink everything?
Anxiety, perfectionism, stress, intolerance of uncertainty and beliefs that worry is useful can all keep the loop going.
Is overthinking a mental illness?
No, but chronic rumination and worry are features of anxiety and depression and may need treatment.
How can I stop overthinking at night?
Use a scheduled worry time earlier, keep a notepad, practise slow breathing and avoid problem-solving in bed.
Does meditation help?
Mindfulness-based approaches reduce rumination and worry in many people.
How long does it take to change?
With daily practice, many people notice improvement within a few weeks.
When should I see a psychologist?
If overthinking is persistent and affects your mood, sleep or daily life.
Sources
This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.