How do you learn to turn to things other than self harm? And what things can you go to instead?

Do you have any personal experiences? Or know anything?
It feels kind of shameful to do this all the time. I want not feel disgusting anymore, but it seems I don’t even consider doing anything other than going and bludgeoning myself at the time. When I get the picture in my head of getting all covered in blood and bruised, I want to know how to do something else instead.

Sorry, to be honest, I feel like a bit of a knob for asking this sort of thing. =/