I think getting help with the bipolar first may be of help - you say you don't want to get into trouble and you admit to being impulsive and manic at times. Perhaps with correct therapy, perhaps even meds to get you on a more even keel may help with that and also getting into trouble. I think it's worth going to see your family doctor and just see if they have any advice for you?

Even if you parents were totally frustrated with your behaviour and just reached the end of their tether, then they still should not have hit you. You're not a small child where you can smack on the bum for being naughty, you're nearly an adult and to be hit with such force that it breaks ribs.. well.. let me ask you, what did that teach you? What did it achieve? Did you feel loved? Did it make you feel better about yourself? Did it help with your bipolar? I can't see any positive result from this abuse.

Your parents should've got you help early on, doctors, therapists, the lot. If they were struggling and couldn't cope with your own violence in the home then even to ask for you to go into a hospice or one of those camps especially for troubled teenagers with bipolar where experts can help you would've been better than abuse. As horrible as that may have seemed for you, at least someone would've been there to help you learn to cope with bipolar and helped you get out of this pattern. Hitting really is not the answer, and it only teaches us to be more angry, upset, uncertain and it take away our self-esteem and many other negative things.

Again, I am really sorry that you're going through all of this, it's a rotten place to be. I do hope you get some help and find a way to get out of this pattern. Be rooting for you..