i'm not entirely sure how to cope with it in a healthy way yet, probably because i got diagnosed with a severe condition, but i do understand skin picking and for that you might want to look into fidget/stim toys. fidget toys help distract your hands so you can't pick elsewhere and there's a wide variety of them. i would recommend buying some from etsy or this website called munchables.com (they have good prices and free shipping if you live in the us and canada)