LastChance,
Welcome to SR! I don't have much experience with marijuana myself. I can tell you about the huge changes I noticed in my friend when she quit smoking. She was a little crabby at first.
Then she had this fabulous burst of ambition! She went back to school, got her master's degree and has steadily risen professionally. She's so much more fun now! Her wit is quick and she's far more confident.
I don't think she used a recovery program officially but I know she read a lot of material on addiction.
Again, welcome to our forum!
Love,
Lenina