There's a peculiar thing that happens every time you get clean. You go through this sensation of rebirth. There's something intoxicating about the process of the comeback, and that becomes an element in the whole cycle of addiction. Once you've beaten yourself down with cocaine and heroin, and you manage to stop and walk out of the muck you begin to get your mind and body strong and reconnect with your spirit. The oppressive feeling of being a slave to the drugs is still in your mind, so by comparison, you feel phenomenal. You're happy to be alive, smelling the air and seeing the beauty around you...You have a choice of what to do. So you experience this jolt of joy that you're not where you came from and that in and of itself is a tricky thing to stop doing. Somewhere in the back of your mind, you know that every time you get clean, you'll have this great new feeling.
Cut to: a year later, when you've forgotten how bad it was and you don't have that pink-cloud sensation of being newly sober.