sodope, I can tell that you are sincerely dedicated to turning things around, quitting H, etc. There is nothing more crucial to actually accomplishing such goals than the sincere DESIRE to do so. Without that, no amount of methadone, buprenorphine, Thomas Recipe, 12-Step, SMART recovery, psychiatric counseling, etc will fully work (but they certainly help).
The bolt that holds it all together is the sincere desire to do so.
Good luck, BL is here.