Borderline schizoaffective, psychotic features. Constantly questioning sanity. Reality often surreal. Dbt, cbt has helped the most. If I practice mindfulness, grounding exercises daily… when mind spirals, reality starts to explode, easier to come back, keeps me tethered.
Tho, once as kid, when I became convinced I might be a disembodied brain floating in a jar, started to seriously freak out. Came home in terrorized panic, flipping madly thru my bookshelf, and reading “summa theologica” finally made the panic stop.