My form of self harm used to be cutting, in order to stop I used rubber bands, but then my friends yelled at me for that and so I started drenching a sponge, or cloth, in water and freezing it. When the need arises I twist the frozen sponge. It hurts a bit but doesn't break skin. (Idea from counselor)
What ever works, darlin'. Life is a gift...don't be an indian giver. You are to valuable and God has a special will for you. "Seek and you will find!"