Polishing my 3DS nonstop... does that count? Like, 95% of the time while I'm playing, I'm polishing something on it. It's my baby, what can I say?
I also have a really bad habit of dissecting my skin. It's called dermatillomania. I usually have to wear long sleeves so I don't completely destroy my arms. It does sort of pose as a health risk, for constantly having open wounds somewhere on my body, but so far, I haven't gotten anything worse than an occasional staph infection. I know I need to stop. Constantly stimulating my skin to heal like that is probably increasing my risk of various skin cancers, not to mention if where I'm picking is close enough to my hairline, I will start pulling my hair. There are certain things I like finding in hair roots that gives my OCD a weird satisfactory feeling. Like I'm pulling my hair out through the inflamed skin and the tubing is still there. Satisfying. I get really feverish about it, too. I will not stop until I've gotten what want out of my skin. Whether it's some obscure blemish--which in my case, it actually isn't normally anything visible...--or even when I'm plucking my eyebrows. If there's an eyebrow that won't come out, I will dissect my skin until I'm a bloody mess just to remove what I wanted to. If people elbow me to stop while I'm having an episode, I will totally flip out. It's not a good habit to have, and it doesn't hepl that I have some genetic form of dermatitis that gives me a few more things to pick at. It's usually pretty mild, though. I've gotten better. My case of dermotillomania is not as bad as most, so while it is a concern, it's probably something I can change if I tried hard enough.