I know them feels bro. I kinda skated my way through the second half of Highschool and once I graduated I realized how stupid I was. All I can really say is it gets better. Once you graduate and either move on to College or a job, or both, cut it the negative influences in your life. If that means cutting all ties to past friends, then so be it. It will get better, trust me. I was in your exact situation and now I can honestly say that my situation has gotten better. There's been bumps, but what's life without a little challenge?