I quit cold turkey 3 times (all 3 times were for long periods of time).
The first time, I had been smoking Kools, which are a very strong menthol brand. So what I did was, each time I bought a new pack, I stepped down on the taste chart until I couldn’t handle it anymore. From Kools to Kool Milds, Marlboro Menthols, Marlboro Menthol Lights, plain Marlboros, Marlboro Lights… by the time I got to ultra lights, I hated the taste of cigarettes and was done with it.
The only reason I started smoking again was because, over a year later, my sister and I smoked weed together, and she gave me a Kool afterwards because it supposedly makes your high better. Needless to say, I started smoking all over again. (Another reason not to do drugs – you make stupid decisions.)
Another time my fiance wanted to quit smoking, so I quit cold turkey for half a year. Then i found out that she was still smoking behind my back, and the only reason I had quit was for her, so I started smoking again.
Then, when I was about 4 months pregnant, I stopped smoking cold turkey until a couple of months after my baby was born.
I’ve never used the patch or any pills.
I’d like to point out, though, that in my opinion and personal experience, you will not be able to quit if you are living with or spending most of your time with a smoker.