There was an author named Allen Carr, an Englishman, I believe, who wrote a book called The EasyWay to Quit Smoking. I can attest to the relative ease his method provides, over quitting cold turkey. Essentially, he uses tools of psychology to reinforce his points, such as spaced repetition, but he also dissects the psychology at play inside the smoker's mind. He frames nicotene addiction as a state of brainwashing, a…
It's funny that the Easy Way to quit smoking actually discourages any kind of replacement for smoking. I tried to do it "right" and follow that direction, but eventually I started chewing gum. It felt like a failure at first, but it worked so no regrets.
My realization there was, life is a series of habits, or addictions. Some positive and some negative. Accept that, and treat them all as something outside the self. Suddenly, working out, studying, flossing, all of these simple things that seemed difficult before were now easy.
I'm sure I'm not explaining well. It's probably not something that can be explained. Just know that quitting smoking grants you a superpower, the power of not giving a fuck. And that's the greatest power there is.