The life you live is mostly determined by yourself. Nobody was scheming at your birth to make your life miserable.
I believe that most of us are blessed with a life that's not limited by problems of food, money, or shelter.
Thus, you ultimately shape how you became.
No matter how angry you are at what you are, you still don't have the right to treat other people like dirt. It isn't going to help you.
Don't feel sorry for yourself either. You would be stuck in a self-defeating/hating loop as your life becomes more miserable due to your inaction.
You still have time to change.