I'm angry and feel jipped because my mom...?

I'm sorry your mom treats you like this. Have her read the new Nanny 911 book, it has great tips on how NOT to parent. I dont know if this makes you feel any better, but my family treats me much the same way. And its hard, because you always have your mom there to pull you back down everytime you try to be happy. It doesnt get any better once your 18 either. The only upside is that you can move out and legally your mom cant do a thing about it. What ever your mom's problem is, its not your responsibility to handle it. Never doubt yourself. Your strong, and independant and no one can stop you from living except you. Let what she has to say go in one ear and out the other, tune her out. Just walk out when ever she goes into a tantrum. Talk to your counselor, friends, dad, but just dont let her drill it into your head that your not worth anything. Your worth a great deal. If you want proof, just think about your friends. Think about the fun times you've had together. If you werent around, those memories wouldnt exhist. You mean a lot, and that your mom cant see it is her problem, not yours. Good luck. :)