>>2 well that was a lot of assumptions too. Yet it is quite accurate for most people.
I have no idea why you got into depression though. My brother is one of those entitled kids and says his life sucks when he got a bad grade. He can't comprehend my dad constantly beating me and telling me I'm a worthless shit. It f'd me up as a kid, since I had no one to turn to. It made me depressed and a sociopath, but I got better in the long run.
As for your predicadement I can't offer any advice, as I have no idea of what caused your current situation. At least your getting help for it, which I did on my own.
I don't think you're avoiding insanity, as you are worrying about a minor issue, cutting, compared to other things, like killing others.