Leo Babauta discovered the crutches he used in his life (eg smoking) and gave them up. Quite easy to do, he says:
I meditate, drink tea mindfully, run and workout, go for walks, give myself more space in the day, let go of the expectations/ideals that are causing the stress in the first place. I find pleasure in all of these things, and in socializing with good friends, and in a good book, and don’t need to smoke to find pleasure anymore.