I know how hard it is to quit. I finally did it 22 years ago. I tried a couple of times. One has to find the "trick" that works
Cheating is very dangerous. And one is never free of the urge and temptation then. It takes time but the urge goes away and then one can't stand the smell of cigarettes.
But not only does smoking increase the likelihood of returning cancer or new cancer, but it does other damage to your lungs which further reduces your lung capacity and function. For example, Pulmonary Fibrosis can also kill you. I know, I have lung cancer and other lung problems.
And if you need dental implants, they do not like it if you smoke.
And cigarettes are really a waste of money!!!!