As other have said you have to be ready. I quit cold turkey and never went back to cigarettes. However, I do have nice cigar once in a while and no I don't inhale which is a bit strange, but I just don't. Didn't someone make that line famous?
Anyway, if you have the "want" now, then just quit and do it, or when it becomes a "need", it usually mean death is just around the corner. Just lost a brother in law in June from lung cancer....wasn't a pretty sight!
UglyJohn