I’m sorry I don’t have very good advice. I was the same in many ways. I was very rebellious, partied a lot and wasn’t interested in going to school. In fact after high school I either flunked out or just didn’t go to class. I started at a big university, came home and tried community college. I didn’t change until I feel in love, got married and had a child. I don’t believe you can teach common sense. However you can teach people (especially young people) how to do many things the correct way. Is he interested in learning a trade? Many times we work harder when we enjoy what we are doing. Don’t give up on him. Some of us take longer to get our lives together.