Depends how motivated you are, you must be if you're here. I did it cold turkey but that's not the method for everyone. I preferred to get all the bad done with at once. Alot of people here have been using nicotine replacement or chantix with success. I will have been quit for 18 months in just a few days, I believe I've managed it for so long because of the really hard time I had with withdrawals it scares the bejeezers out of me to have to go through it again but it was definately worth it.
When I was thinking about quitting I started stepping down I started smoking lighter cigs than ultra lite etc. Than I toughedit out and kept really busy ALL the time. You just have to know you can do it and just do it. Perhaps it could be your christmas present to yourself and your loved ones.