I smoked a bit when I was drunk, might be a correlation there.
I chewed for most of 20 years.
I quit cigs cold when the girl I was seeing said I stunk. Zero issues.
I quit chewing cold when the girl I married (same girl) said it was icky. Zero issues.
I quit drinking cold when she decided that 6 to 12 beers every night was too much. Zero issues.
I love the girl, that made it easier.
I think addiction really comes in 2 parts. In stage 1 there is the daily use, comfort and joy you get from using, I totally had that, in spades.
But then there is the aftermath of quitting. The desire, missing it, what do I do with my hands, emotional and physical discomfort. Luckily, my body does not do stage 2 when I quit.
So, for me, quitting was easy.
You have the right motivation and the desire. You can do it, I believe in you.