Emotions & mind
How do i stop worrying at night?
Most sleep advice for overthinking is really anxiety advice: get the worries out of your head and onto paper, name what is actually within your control, and set a time to think about it deliberately. Reducing caffeine and screens helps the body fall asleep even when the mind has not settled.
What this does and does not tell you
This is general information, not a diagnosis. Only a clinician can examine you, take your history and run tests. The same symptom has different causes in different people.
If something is sudden, severe, or getting worse quickly, get medical advice rather than reading on.