I've now managed (nearly) a month as a non-smoker, cold turkey and just wanted to say that one thing that has greatly helped me is a modern twist on the old classic to put money aside that you would normally spend on cigarettes.
I've got an iphone (but am sure there are plenty of apps for all modern devices) called 'Since iQuit'. It's a great little app where you put in when you stopped, how many you smoked and how much they cost and it gives you live updates of how long you've stopped for and how much you've saved.
The reason I got the app is because physically putting the money aside (or even transfering into a savings account or something) wasn't a positive option to me. Having to force myself to think about every time I would have bought cigarettes, going out of my way to put money aside plus then dipping into that money to buy something (thus not really having an accurate figure of how much you've saved).
With this, you check it if you're a) interested or b) struggling and it's an instant "boom - you've saved this much and you've stopped for this long".
Hopefully other people will find similar apps useful!