I know how hard this is, but it would truly help to tell a close friend. My best friend is anorexic and cuts herself, and one day she finally told me and then I told her my secret as well, I cut myself as well. We both benefit from this relationship and it is better than a therapist, because they understand you better even if they don't know what you are going through. We also make some cash by making bets on who cuts first and we have a couple deals, one, we won't kill ourselves, two, if I don't cut she has to eat.