Faster Than The World is discussing quitting smoking. I have done it twice. The first time, I lasted for six months. I was doing fine, but during preparation for deployment to Afghanistan, I slipped off the wagon. Probably a good thing given the environment there.
But I quit again in Dec. 2004, kind of as a birthday present to my wife; mostly because I needed to do so. Over a year and a half later and I occasionally get a craving but I don't feel like I need one.
Quitting addictive substances is hard. But do you think it's harder to be moderate? I do.