I have clinical OCD (comorbid with TS).
It's taken me a lot of work to clean normally (medication, therapy, occasionally weed). I was just thinking of this earlier today when cleaning up the kitchen after my sister. I was pleased with myself for getting the sink and dishes done, wiping all surfaces down, sweeping, miscellaneous other duties all in about an hour.
See, in my dark days, I'd have been paralyzed from the very first to do on my list: dishes. I'd have started, sure. Realized ok, I can wash these ones by hand and put away. OH MY GOD. There are some bowls in the cupboard that look dirty! I had better take them all out and clean them. Oh, should separate them by ones to handwash and ones for the dishwasher. Man, I should take everything out, then. All of it.
By the end, everything would be out on the counter, I'd be sorting by about 4 different categories, I'd realize the cupboard needed to be gutted next, AND IT'D BE 3.5 HOURS LATER.
And still no real dishes done. Nevermind cleaning up the stove or putting away food or sweeping up the floors. Or wiping microwave or fridge.
Oy, I can remember those types of days, and it was awful.
Ya know, people who don't know me that well, see sometimes how I constantly tidy things and work hard to keep it neat and they'll joke about it, and say they want me to come over and clean THEIR place. And I'll laugh, and smile, but inside I will die a little because they don't realize how precarious my mental health is in relation to cleaning.