I gave up smoking dozens of times, then one day after visiting the doc for a cough problem, he gave me a prescription that he said "would clear up the problem very quickly" On my way to the chemist, I looked at the prescription to see how many items were listed and on the otherwise blank prescription form was written "stop smoking immediately" I took the hint and the next day told everybody that I had given up smoking and that if they saw smoke issueing from me then I was on fire and would they please put out the fire with a bucket of water! Being in the construction industry, I knew that my collegues would assist in that way.
I then took to dental floss, mouthwash and breath fresheners, the flossing replace the ritual lighting up aftera meal, the mouthwash/breath fresheners replaced the taste which is often why smokers light up a weed directly after a drink or meal.