I hear so much of people coming off heroin with the use of methadone, subutex etc. and then ending back up as an addict again!!!
The best way to stop this from happening is to go cold turkey. I was smoking it for over 2 years to the point where it took a starter dose of 100ml to ease the cluck, and I relapsed again not long after.
The reason I find cold turkey the most effective method for quitting is because once I did it,( no valiums or ganga, nothing,) I felt every pain and emotion, and it stays in your mind. It's the best deterrent I've come across, it definately taught me a lesson.
I must stress that this is only true if you don't take any other drugs, as you'll forget the most important lessons a cluck can teach you if your on valium or cannabis.
You need to feel every bit of your cluck to learn!