This becomes much more difficult if you want to cut down on a habit, but not cut it out completely.

Take video games.

Sure, you could throw out your Playstation and the temptation is no longer there. But what if you want to play just 1 hour a day, instead of 5?

How doe you remove the temptation for most of the day, but allow it to be there for part of it?

Gotta get more creative I guess. Work somewhere else. Or something...