Trust me, I know the feeling. The good thing is, we perservere and go on with our lives and we are much better off than they are.
Don't let looks deceive you...that carefree lifestyle he seems to be living isn't all that. He's still using because he can't deal with life. You, on the other hand, are dealing with life and will be so much better of for it.
Hugs and prayers!
Amy