Jan 19 marked my 6th year anniversary of not smoking. i very rarely think of smoking, and don't want a cigarette ever again. I do need to keep up my dopamine levels though: exercise and yoga does it for me. I get my "chemical fix" from yoga.
I quit smoking with Champix - the Champix didn't stop the cravings completely, but it did take the edge away. Once my sub-conscious registered that I was a non smoker the journey was easy. We quit smoking in the sub-conscious - once the sub-conscious gets the message it's easy to quit smoking.
All the best to those who are starting on the journey of becoming a non-smoker.