On January 1st, 1968 I went to bed smoking a cigarette - probably about 3 am. When I awoke , about noon, I had a killer hangover,and, amazingly, no desire for a cigarette. I have not had a cigarette since that time (did smoke a few ceremonial cigars over the years). Went from 3 packs a day to zero, cold turkey.
I happened to be on the road throughout up-state New York most of that winter, so I started eating roasted peanuts as a substitute for smoking. I kept a bag of peanuts on the seat next to me and , instead of lighting a cigarette I cracked a peanut . Along with the peanuts, my tastes buds gradually returned, I started really liking good food, and over the years went from 140 pounds to a bit over 200.
To this day, my wife tells me, I still sometimes reach into my shirt pocket for that pack of cigarettes - especially if I'm under some stress, engrossed in a good argument, or, maybe, drinking a bit more than I should...