I had tried the patch, Zyban, the gum, etc over the years, but finally quit cold turkey last March. It was actually the easiest way, as with all the other stuff I always found it to be a drawn out experience, but with cold turkey it was really tough and than it susbsided more and more each day.

a good support system was pivotal. Check for online support forums as they do help just to bitch and moan a bit. Best of luck to you, I know how difficult it can be.