When I feel disgusted of myself I kind of just go into a rage and slam my head against anything. Walls, doors, books, my car. Usually I just beat it down with my fists as quick as possible. My head feels like a bruised pinata, but I rarely if ever feel like I internally damage my brain, although I know repeated assaults to the head will kill some brain cells among other things. Sure it's not cutting, but it is my own way of self harm.