your post really caught my attention. i quit 11 years ago and it really, really was the hardest thing I have ever done. I never want to have to quit again.
I refer to myself as a smoker who has not picked up another cigarette, because for me, it is all or nothing too. I haven't actually had a cigarette since I quit April 12, 1999.
What I found: i needed more sleep. i dreamed of smoking when I was sleeping, and would wake up guilty. i watched a lot of x files. i realized that my craving for a cigarette would go away, whether or not I had one, so might as well not have one. i have to say that i have never felt better, i can't stand the way it smells on anyone, and having three teens, once you quit smoking you INSTANTLY smell it on someone else...a very effective parenting tool. haha
good luck. i really understand where you're coming from.
congrats.