Hey! I do the same thing with my fingers but for me it seems to be worse at different times. Recently I didn't pick the skin around my nails for a like a month. I did notice I had traded in that tick for playing with my hair more or rubbing my arms. I just recently started picking the skin around my nails again but its not as bad as it once was. A friend has told me chewing gum might help...I haven't tried it but am going to! Hope you can find a way that helps you!