He won't make sobriety.
To reach that goal he would have to:
1) Move out of his pot smoker parent's home, and stay away from enablers and other substance abusers.
2) Join a program like AA who all have a focus on getting and staying sober. Aaron Imholte does it.
3) Start regular work with a male psychiatrist with the goal of working on A) using behavior tools to resist substance abuse, B) concurring his social anxiety and learning to regularly socialize in healthy ways with the people in town, C) Preferably find a expert in dealing with narcissism. Get a narcissism assessment. They can't quite cure someone of narcissism, but an expert can teach you how to manage your condition so that you are less destructive to the people around you. Word on the street is that you can only find experts in narcissism in large cities. Still, this is Tarl's only hope.
I wish Tarl well, and hope he does it. But honestly, I don't think he stands a chance.
All he is right now is a solid living rebuke of A) drug culture acceptance, B) occultism, C) libertarianism.