By the way, one of the reasons I was able to finally put my desire to not smoke anymore into action, is because I sought out and focused on a large number of examples of people I knew who used to smoke and had successfully stopped. I tried to stop a lot of times and failed, but I kept reminding myself that "it can be done, it can be done, it can be done". So finally, it came down to this: what was I willing to endure in the way of discomfort in order to stop smoking? As soon as I accepted the fact that I was willing to endure any level of discomfort, I was free to stop smoking.
Smokers Quit in Droves, Not Isolation - US News and World Report