I feel your pain. Grew up part of my life in tobacco country. First paid work I did was hanging and stripping tobacco. You can't do that job without getting strung out. Been up to a three pack a day guy. I prayed that God take away the habit when he saw fit and one day I just stopped mid-pack and dealt with feeling miserable for a few months without nary a craving.
Had a serious car accident which caused some long term concussive problems, smoking was a help as was caffeine. Heck, my doc supported it.
FWIW, cold turkey remains the most successful protocol.
Since, I have recovered for the most part. I plan on stopping the five or so cigarettes I have been smoking per day coming up during Lent.
The very fact, I've consistently pretty only smoked 5-7 cigarettes a day (unless out with heavy smokers at a bar) attests to some sorta miracle.
Pray for me and I will do likewise for you.
And remember it is a gross motor movement you can control. As in my recovery from serious alcohol addiction and drug use, prayer and being useful to others and remembering I can control my gross motor movements when I feel a bit antsy remains the successful protocol.