Mike lived with his parents off and on, and at the end. I know he made some money personal training and pitching low level fitness things - homeopathic supps, breathing aids, etc.... He also used to pitch that he wanted to make a film or book about his life, sort of a rough around the edges kid makes good story with some mob and wild times tales added in.
I'm not sure how true it is, but a couple of folks that claimed to know him down in Florida thought he was bi-polar. Periods of extreme happiness, then periods where he was blank to the world.