Physical tobacco addiction symptoms go away pretty quickly, the ritual part, smoking after eating, with a cup o'coffee in the AM etc. takes a bit longer.
Of all the addictions I've struggled with (I'll be clean and sober for 15 yrs this Thurs.

), tobacco is the easiest for me to pick up on again.
One of the main things I had to do was stop buying the damn things and tell everyone around me that I was quitting so they wouldn't let me bum one off of them.
Every adult in my immediate family has died due to some form of addiction, generally lung or heart related caused by smoking.
I've not smoked in about a year and a half, diagnosed with borderline emphysema. A month after I quit I didn't need the inhalers and haven't had to use them since.
Decided that I wanted to be able to breathe, if nothing else to stay around a few years longer just to piss people off.

Bottom line if you're really done you will be successful, make the choice, go thru withdrawal and you'll never have to do it again.
Best wishes, I'm rooting for ya!
ARCADIAC!