I smoked 2-3 pad. smoker for about 40 years. when I started vaping, for the "hard" first thing in the morning one, I delayed 10 min, then 30 min, etc until my first cig was in the afternoon. basically, I would vape for a while if I wanted a cig. then if I still wanted the cig I had it, but usually only smoked 1/2 of it at a time.
after a few months, my first cig was right before bed.
I still have 2 cigs a day, right before bed. I have maintained that for 3 years without going over. I never think about a cig until it is about bedtime. other people smoking doesn't bother me or make me want one. I don't drink much, but when I do I am good vaping.
so, why do I still have those 2 cigs a day? cause I'm old and I want to!
<edit> let me say that in my younger, heavier drinking days it might have been harder for me to not smoke while drinking.......