As reeen said don't worry if you have the odd one, or a drunk night where you smoke, don't use it as an excuses to start again be relaxed about it. Better to have the odd relapse and slowly become comfortable not smoking and get there in the end.
Always refer to cigarettes with a negative name. I know it sounds like physiology mumbo jumbo but if every time you say I'm off for a fag you always say I'm off for a death stick or I'm off to make sure my teeth implants fall out or I'm off to through money away e.t.c it's the equivalent of continuously nagging yourself and not hiding form the reasons you want to give up.
On the Smoking front two points
As reeen said don't worry if you have the odd one, or a drunk night where you smoke, don't use it as an excuses to start again be relaxed about it. Better to have the odd relapse and slowly become comfortable not smoking and get there in the end.
Always refer to cigarettes with a negative name. I know it sounds like physiology mumbo jumbo but if every time you say I'm off for a fag you always say I'm off for a death stick or I'm off to make sure my teeth implants fall out or I'm off to through money away e.t.c it's the equivalent of continuously nagging yourself and not hiding form the reasons you want to give up.