I pull the skin off my feet compulsively

I have chewed on skim from my hands and feet as well. It's a very interesting texture. I seem to have a compulsion to make my skin perfectly smooth. I often find myself picking off tiny bumps from my arms or face (with sometimes bloody results). Now that I think of it, I actually haven't picked at my feet recently. You just have to find something else to do. Wear really warm socks that you don't want to take off. Convince yourself that your feet are covered in gross germs that will make you puke. Find something else to pick at, that isn't harmful or anything- I like to pick orange peels to shreds and eat them. Chew gum to occupy your mouth, and read a book to occupy your hands.