Hiya Leslieann1.. Although i had not smoked for 20 years like you had, i had been smoking for 5/6 when i quit last october after my poor nanny died, my only advise to you is be prepared.. i spent a whole day baking/cooking lots of healthy goodies the day before i quit. I was desperatly worried that it would ruin my weight loss, but with aid of my healthy snacks, i got past the cravings.. once your past it.. no matter how long that nasty bit lasts for, for me it was about 2 weeks.. and now i dont even think about it!.. concenrate all ur energys on your diet and youl get through it!
good luck hun x