That was not my experience. I smoked for 13 years, started in 2004, when I was 16. I have had periods when I smoked a pack a day. But in 2017, without even trying to do it, I just realized at some point that I have been forgetting to smoke for a couple of weeks. And I just never bought a new pack after that. Didn't even have to had any disciple of willpower; I'm just that bad at developing any habits.