There is "Thank you for not smoking" sign at work. Usually, I don't have a problem with that. Smoking at working place is pain in the butt. It's always much better to go out (on a lunch break) or use smoking room/office kitchen for taking care of your nicotine addiction. It's less troublesome.
But, what to do when you don't have that? I work 6,5 hours during week days and every other weekend I work 13 hours (Saturday) and 9 hours (Sunday). I can't leave my working post. Let me remind you that I am severe case of a nicotine addict. So...taking all this into account, allow me to show you my "Getting ready for work" ritual.
It's working. Most of the time.