Hamilton has access to literally all the help in the world. He has to want it, and want to stick with it.
When he was given help last time, he turned around and torched everyone that supported him. Thus, fuck Josh.
The thing is, he has EVERYTHING, including all the money in the world and a family who loves him. well, I'm not too sure about the last part any more. But if he's serious about his life, he'll get the fuck out of Orange County, California and get better. Hanging out in that environment is only going to get him dead.