i third that emotion. i've been a 25-year smoker, up to 2 packs a day, and had been trying seriously for a year to quit. 5 attempts, including hypnosis (if i got to hypnosis, we can assume i got to everything else).
it's a miracle drug. it basically says to you, "fine, go ahead and smoke, i don't care. you can have everything but the nicotine."
have you tried herbal cigarettes? they're disgusting, right? it's not because tobacco tastes so good. it's because the herbals don't have nicotine in them.
i'd recommend pairing the chantix with alan carr's book, The Easy Way (which is all about how smoking is about nothing but the nicontine addiction. coincidentally, he also recommends you keep smoking while reading the book.)
anyway, i never even picked a quit date, i just realized i wasn't getting what i needed and slowly stopped trying.
if you've got the will power to take two pills a day (and the money, it's about $150 a month and insurance doesn't cover it) you don't need the will power to deny yourself each cigarette.
anyway, it's amazing. good luck.