[HarlowDuDy]

I agree with most here... As long as your world revolves around that fix at the end of the day, it's going to be almost impossible.

But from my personal perspective, I didn't "quit" until I really wanted to. I also give myself the opportunity to make mistakes.

I don't buy cigarettes anymore. I rarely even want one. But if I'm in a situation where it sounds nice, I'll let myself indulge.

Basically, don't "quit". Just tone it down, find things to keep yourself busy, and eventually it will lose its power. If you have to have one, do it, but don't let the thought of it consume you.