Pipping

Devils advocate here. Your living with your parents as an adult in their home so that you can save some money or afford to keep going to school. You admit that you are no peach to live with.
Your parents might be having a hard time with this. They may not have expected to have an adult child living back at home. They may be stressed and worried by your drinking and behaviour. I have been in your parents situation and it's really hard when you are offering ongoing financial support as well as sharing your home and sacrificing your privacy for an adult child that resents you. Think of it from their perspective. If it's not working it may be best if you find a renting situation with other people to split costs.