I just basically just screwed up my entire teenage life. What should I do?

It doesn't matter what you do, your father and step father have NO right to hit you!!! isn't there a law against that in switzerland??? You are not a bad person you just made a bad choice but its obvious that you are never going to do that again. Don't think your life is over. i don't know what else to say... Did your mom stick up for you when you were being beaten? sorry you have to go through this. And yeah its good you're getting your feelings out