Skin-picking

I pick and chew the dry skin around my fingernails and off my lips. It's pretty awful. I have rumination tendencies that are really awful too, and I can't work out which is better/worse!

Anyway. The key to kicking OCD is apparently resisting compulsions and sitting with your anxiety, finding that it's not so bad. But I don't know how to do this. Sometimes something works for a little while and then I find a workaround somehow or get accustomed, and I pick/chew so absentmindedly sometimes.

Have you managed to kick skin-picking compulsions? How?