Another emblematic figure in this sense to me is the so-called 'cutter'- a widespread pathological phenomenon in the USA. There are two million of them, mostly women, but also men, who cut themselves with razors. Why? It has nothing to do with masochism or suicide. It's simply that they don't feel real as persons and the idea is: it's only through this pain and when you feel warm blood that you feel reconnected again. So I think that this tension is the background against which one should appreciate the effect of the act.