The thing about smoking is that when you quit smoking you quit it every day. Imagine a light switch on the wall. You turn it off by quitting smoking and you can always go back at a desperate time for instance and turn it on. And some time later off again. Smoking your first cigarette implants that light switch on your mind and you can't make it go away. Since you know how it makes you feel good when the switch is on,…
As long as you're able to separate yourself from the narrative of "I'm a smoker" and just let go the big dramatic story about how it's hard and you're going to fail then it's relatively easy to just deal with the physical symptoms of withdrawal/craving. I have a strict "no nicotine" policy and it makes it super easy because I never have to wrestle with decisions about whether I'm going to smoke/vape/whatever, the decision is already made.