We have to disciple through God's Word. Help people understand that counselling from the world (AA, NA, etc) is not what they need, but that the real help they need is to be found in the Word. Understand that you, as a discipling partner, are competent to counsel because you have God's word. (Romans 15:14)
Expect emotional immaturity. Remember, using abusively stunts your ability to deal with emotional difficulty and problem-solving. People are therefore very susceptible to relapse in the early stages of recovery, because the life of a disciple demands emotional maturity. Here's how to help people identify what they're feeling: Have them write a list of feelings like the ones below:
Happy
Mad
Sad
Glad
Afraid
Embarrassed
Etc.