Paintbox,
I quit 13 years ago (took 3 attempts) from 20-30 Camels a day.
The thing I really remember was that, after the first couple of weeks when the physical addiction was broken (that was the easy bit!), I had to seriously change my habits to avoid those occasions / situations where the mental craving was at it's highest.
I avoided pubs for (quite) a while, I got up after eating instead of sitting back and craving the delightful post-prandial ciggy. It worked.
I also allowed myself any food anytime anywhere to get over the cravings - black olives and tortilla chips seemed to hit the back of the throat in a vaguely satisfactory way!
As others have said, having a specific (tangible) use for the money you save is another good thing - I spent my money on learning to fly gliders.
Scare yourself - go visit a cancer ward. My mother (still) works at a hospital that specialises in treating cancer patients and she was happy to facilitate a visit for her son, believe me!
Look forward to being a smug b*****d ex-smoker!
Whatever works for you, I wish you every success
Good luck!
SD