Maybe you could try slowing stopping self harm by doing less harmful things like snapping a rubber band on your arm. That's what a nurse suggested to me once. Self harm is a really difficult thing to stop doing, but it's good that you have a goal to keep you from doing it. You could also try a dream board with male bodies or anything else you associate with your gender. It's possible that looking at that when you want to self harm could help remind you of what you're working for when the self harm urges seem overwhelming.