Try wnaking instead. It's a much healthier option, and there's no way way you can do it 20 times a day. Seriously though, it helps if you've can replace it with something. I ate Fisherman's Friends every time I wanted a fag last time I stopped. They're strong enough so you know you've eaten one, so you won't just keep eating them all the time (like the time I tried with mint imperials).