I have never met a person who quit smoking who didn’t truly want and decide to quit; and I have never (yet) met a smoker who truly wanted to and decided to quit, and then failed.
As an aside, eating a lot (i.e. getting obese) is far less pleasant to me than smoking, and more likely to cause a premature death (I believe fewer than 1 in 12 smokers die before their average life expectancy directly due to smoking – don’t all jump on me at once… I said I believe. I would love more information on this question. Maybe they don’t publish this part of studies). I don’t smoke (anymore) BTW. I just don’t appreciate the manipulation of numbers that anti-smokers use to try to influence mass behavior, even if some of it is true. E.g. “Smokers are 20 times more likely to get lung cancer,” vs. “Non-Smokers have a 1/7200 incidence of lung cancer, smokers have 1/360 incidence of lung cancer” The CDC said the first one, I said the second one (based on info from the CDC). Both are true. I can even turn it around. Someone who quits smoking has an 80% likelihood of gaining weight. Perhaps it is healthier to smoke. Remember, figures can’t lie but liars can figure. Trying to maximize the emotional effect by being tricky, just because it is the most practical way to lower healthcare spending is wrong. Again, the incidence rate I posted is 100% neutral, and 100% agenda free. Stating the percentage increase without stating the original numbers, is a big fat manipulative lie.