Remember it is his addiction not yours. You know what it takes to control an addiction, did any thing anyone said to you make you quit? It had to be a choice you made. You know what helped you, and even though it may be painful right now to revisit it in yourself, it is there you will remember what people did, and how they helped you, and what did not help. The most caring person in the world could get it wrong and exacerbate the issues. Time is the only thing that will show progress.