Also, sorry for being so long winded, you have experience with drug usage. You can work with that to better understand your sitaution :
1. Did your W or anyone try to get you to stop? How did you react? 2. Did you get negative when people pressured you? 3. How many months did it take for you to stop? 4. What prompted you to stop? 5. How close were you to the drugs when you were using them? Best friend? Won't leave for anyone? 6. Did you deep down WANT help and were just misreable?