Get a hobby that invites OCD tendencies, like baseball card sorting / collecting or making models. Worked wonders for me.
“hobby” is definitely a word i’ve heard before but i don’t know how to apply it to my own life. does collecting and organizing mp3s count? i bet it doesn’t.
the closest i have is doing my nails, honestly, which has the added bonus of preventing me from doing anything with my hands for up to 45 minutes.