Quitting was the hardest thing I ever had to do in my entire life.
The day my wife showed me the little pee-stick that said she was pregnant, we quit cold turkey.
Cold turkey is really the only effective way to quit, IMHO. I was smoking two packs of Marlboro's, and chewing a can of Copenhagen daily. It was harder to quit the chewing than the smoking.
We quit October of 2006.
Then came October of 2007, our anniversary. I got a wild hair up may ass and I wanted a cigar while we were out partying. That was the beginning of the end. I'm still smoking to this day.

But I never started chewing again. Wife simply will not allow it.
I need to quit, NOW!
BTW, anybody ever try the patch? I have and I don't have any faith in it. The only thing I liked was sleeping with a fresh patch on my arm. It makes you trip in your dreams!