What am I supposed to do?

In a few days my life went from flying high to totally clueless. I lost my best friends to lies that I don't even understand. Talking behind their backs? making up lies and rumors? I was already depressed and suicidal and they both knew this. I ended up in the hospital and made the best friends ever and suddenly right when I got out. Drama. I guess I now know who my friends are. My other friend just got back. First thing she does? Hangs out with the girl that has done NOTHING but tried to ruin my life and cause me pain. Could this be how my senior year really begins? Losing some of the closest people to me? Thank goodness that God gave me the friends I still have. They have stuck with me through all of this and I couldn't ask for more. I honestly can say that I'm happier now, paranoid yes, but happy and not suicidal. I'm going to get through this.