I think I get what you are saying. It's that feeling off not knowing what to do next cause it seems like you should be having a cigarette. I have a very scheduled day and my cigarette time is always at the same time. When those times role around I kinda look around not knowing what to do. A weird feeling like something is missing.
Of course that might not be what you mean at all. But, I got a good vent out. lol
My gf used Chantix, quit after 3 days on it. Quit taking the pills after 10 days and has been almost smoke free for 3 months. She has had 1 puff twice in a week period last month but got sick. Now we have a lot of extra Chantix, but at least she quit.