One of the reasons that I have cut down as much as I have is that there are so few places that you can still smoke. And, unlike you, I can't smoke in the house (although I have been known to lock myself in the master bath with the window open and the fan on), and I can only smoke in the car when I'm alone. I can't smoke in the office. Can't smoke in bars or restaurants, either.

I agree about habits. It's amazing how much I will want to light a cigarette if I'm alone in the car, even if I just have had one. The weirdest thing is that since NY doesn't allow smoking in the workplace, it's illegal to smoke in your company car. How do they enforce that one???