I gladly quit smoking two and a half years ago thanks to a friend.
He had said the brain reboots itself after coming out of anesthesia, and I would immediately no longer crave nicotine.
So after 12 years of smoking, that was the advice I took before I went in to have wisdom teeth pulled.
I felt no urge to smoke throughout the following days, and I had no withdrawal symptoms despite previous failed attempts that had involved much distress.
Toward the end of my smoking, it was too difficult to cut back. I had once gone to my chiropractor and decided to cut back, especially after he said that smoking reduces the healing of the spine by 50%. From there, I took advice for stretches that might help, and I cut smoking to 5 or 6 a day instead of ten. Even though I believed that the work the chiro did was enough to slow down on smoking, I slowly bounced back and was not only smoking ten a day but smoking (and requiring) 3 drags every 15 minutes. I know this advice involving anesthetics should be well received.
If you find that it works for you, I would take a chiropractor's advice and ask about necessary stretches. Also to eliminate toxins and waste make sure to drink plenty of clean fluids. I started drinking four liters filtered water every day to help feel better, though it is gradual and I'm told that breathing, although it improves, it wont ever be what it once was.
Per the comments on this article, it may be advisable to introduce Gatorade, let's say once a week, to substitute some of the water in favor of electrolytes and sodium that Gatorade and similar drinks have. I admit, I sometimes feel airy and forgetful, so it could be that four liters a day of filtered water needs to be paired with a sports drink once in a while. Good luck.