I really wanted to quit, but I couldnt "chose to quit" - so I went a different route that worked well for me, but with an odd cost:
I convinced myself that "smoking will make you nauseous" -- and then, when I attempted to smoke, I would feel sick to my stomach, and I would gag a lot.
This worked for me - and I was able to quit nearly cold turkey.
The cost, is that now, any time I smell cigarette smoke, I begin to gag and I cant control it. Further, now my gag reflex is so strong that brushing my teeth makes me gag heavily....