I'm wondering how long it took for you Chantix users, past or present, to feel like you no longer needed or wanted to smoke? Tomorrow will be day 4 for me on Chantix and I can tell no difference. I know I'm jumping the gun a bit, but I've known several people to take it for only a couple of days and be sick at just the thought of smoking. Quit day is Sunday and I'm scared I won't be able to quit. Is there really a "magic" day when Chantix will just kick in?