Been doing this for far too long

I can't believe I stumbled upon this site because for years I thought I was the only one who did this. It started way back in grade school somewhere and I am almost 40 now. I pick my hands and fingers and there were a few times when I stopped for some reason and my hands looked wonderful. But ever since I started a new job last fall the picking returned and now they are raw and ugly. I want to stop but don't know how. When I was a kid my parents even humiliated me in front of other people about the skin picking. I have been a high-anxiety person all my life (diagnosed with generalized anxiety disorder). Can anyone give me any tips?