I've basically had enough.

[Fragma]

Listen you need to remember, no matter what your situation may be, there is always somebody that loves and cares about you. It would be helpful to have more of an insight into what you think makes you feel this way. I went through slightly hard times in my life through school and felt pretty much the same as I imagine you do (Although I never self-harmed). I found the best way to deal with it was to do something productive, expressive and something to take my mind off all my troubles. You should socialize as much as possible and be around your loved ones as much as you can.
Stop thinking negative and start thinking that your life doesn't have to be the way it is. You CAN overcome what you're feeling.

I hope my advice helps even if just a little bit. I wish you the best of luck in the future.