Having problems with my dermatillomania. Does anyone have ideas to help me stop?

Dermatillomania: compulsive picking of ones own skin.
This is something that I’ve struggled with for a long time, and I don’t normally talk about it. I thought I was over this, but I’ve recently started picking again. I don’t even realize I’m doing it at first. Once I notice I try to stop, but sometimes I literally can’t.
Does anyone have experience with this? Is there something I can do?