I smoked for 11 years and it took several, repeated efforts at quitting before it finally stuck. A neighbor, a nurse who knew of my repeated failed efforts, said "I have one word for you: toothpicks." That oral fixation thing is so real! Also, when the time came, rather than going cold turkey I gradually decreased the intake over a one month period. So, day one, I had a pack, day two, one less ... until I had one on the last day and that was it. The first couple of weeks, the inside of my mouth was actually sort of cut up because, having a nicotine fit, I would end up chewing the crap out of the toothpicks, but they really did help. To this day, almost 15 years later, I still carry toothpicks in the car and use them around the house. Quitting was harder than hell but soooooooooooo worth it. I just watched my dad die a painful death at a relatively young age due to lung cancer last summer.

Good luck to you!