When I get really angry, I punch myself in the head hard. Sometimes only once out of frustration, but I mostly hit multiple times until I'm almost knocked out. I see black spots and feel foggy for awhile. I think that I do it because I want to stop what I'm feeling emotionally. I also feel like if I knock myself out, I can't hurt the person I love anymore. Hope this helps, even though it sucks, it's kind of nice to know that I'm not the only one who does this.