Hypnosis worked for me to quit smoking. I had gradually cut down but could not make the final cut off. I did not gain weight either with the session I went through.
I am not sure if this is the right forum for this since this is a health site but this is what worked for me, I had multiple addictions and used to smoke two packs a day-
I had success with hypnotherapy, it gets to the root cause of why we smoke. then- keeping track of the money saved. (14$ a day, 98$ a week) and taking some of that and treating myself to something nice ( a pedicure, movie ) at the end of the week if I didn't smoke. the amount of money saved each week was extremely motivating!
Good luck to all! Quitting smoking is so hard and you all deserve good health!