It seems to me you have to get the behavior of reaching for a butt out of your system first.
I don't know if you ever get the behavior out of your system.
I've been quit for 6 or 7 years now. I was a 2 pack a day smoker and I loved smoking. At this very minute I could pick up a cigarette and smoke it again. The physical craving is the worst and if you just cut down on the nicotine your still going to continue having the cravings.
You notice alcoholics don't get alcohol through an IV when they quit...it has to be totally gone from your life.