Help with possible depression and self-harm?

You sound a little bi-polar. Talk to your doctor about it. You need to find out if you are getting these feelings because of a situation or if it's a chemical balance. Either way..counseling and or meds will help alot. Parents do get divorced sometimes and it's always best to remember you are not the cause and they both still love you. Maybe try excepting your annoying dad just the way he is instead of trying to change him. He is who he is. Maybe he thinks some others in the family are annoying.