19, I just really started a few weeks ago though it's been there for a few months but now it's pretty consistent. The first few times it was to relieve pressure and to help myself cope (which it still does now) because I didn't know how else to and I sure wasn't going to talk to anyone. Now it's function is to help me focus, calm down my mind, relieve pressure and stress, and well it's become an addiction too. I've convinced myself it's helping me from tipping over the edge and if I don't SI then I'm going to completely lose it.

Meh, that's my 2 cents take it or leave it.