I contemplated quitting at the request of a friend. The only change I made was to tell myself to wait a little longer when I wanted a smoke.
That's it. No counting. No denying myself ever.
After a month I was smoking 75% less. I never consciously thought about what I was doing. No date until a few days before I quit so no big buildup. I wasn't focused on quitting. Never wrapped my head up in fear or desperation.
After 4 weeks I had proven to myself I didn't need to smoke just because I thought I did.
That's the whole game right there.
Once you see you have some control by breaking up your routine a little, you realize you can change this and nothing bad is going to happen.
Don't turn it into something you can't overcome before you even begin.
Get on it. Get your head out of that dark place :-) by changing your smoking routine and take a bite out of it before you quit!