Chic I think he's closed off the "this can help me" acceptance. He my not realize it until he gets a few sessions in...but like Hawkeye said, you just keep the statements you made in place and follow through. It is not your job to explain his life to him, he has to figure it out for himself, you are just doing what YOU need to do for both of you to live better lives (and you to have some peace of mind and stop supporting him like an middle aged teenager).
hope you have a great day off with good weather and no altercations..and yes, he needs to keep applying and I hope he does not sabotage his drug test too.