I have had clinical OCD for decades. It becomes part of the brains default mode network (DMN) and flares up for me when frazzled, stressed or neglecting health. I’ve learned to cope, know why it happens, that it’s harmless and it’s faded with age. I recommend extreme physical exercise that burns off the associated anxious adrenaline and “reminds” the body what relaxed feels like while knocking loose stuck attention. You simply can’t focus on much else when your legs are burning huffing and puffing. There are great benefits of activating the parasympathetic nervous system, releasing natural endocannabanoids and endorphins, experiencing muscle soreness to help you feel grounded and most of all “exercising” the attention system. In time the DMN ruminations will go down exercise causes known changes to brain blood flow, activating different regions, and promoting nueroplasticity/rewiring is part of that. Get sleep to keep from getting frazzled and eat healthfully (actual nutrition, hire someone). Human-generated content may contain personal bias O_O