I've been a 3+ pack a day smoker for 35+ years. Haven't had a smoke for 45 hours.
I MADE IT A YEAR!
I still talk to people that are shocked I did this... I was the poster boy for smoking.
I feel so much better. Things smell so much better. Things taste so much better (and that's a curse in it's on way!).
Seriously, if I can do this, you can.
If you're thinking about it, do it. If you need someone to yell at, commiserate with, whatever.. holler.