Quit specific cigarettes. One at a time.
No more "after meal" cigarettes. Ooh, that's rough man.
Okay, now, no more "after work" cigarette.
No more "responding to frustration" cigarette.
No more coffee cigarette.
No more drunk cigarette.
You're probably more addicted to smoking in the scenes/scenarios/circumstances you find yourself in the most frequently than you are to smoking cigarettes. So quit one at a time rather than "smoking" all at once.
There is a lot of solid research behind this method. If you're a mid 30s American, you might remember the ad from the mid 2000s where the woman carjacks someone so that she can smoke. Narrator comes on "you don't drive every time you smoke... ...but you smoke every time you drive 🤔"
That campaign, iirc, was called "think of a new way to quit"