I started vaping at 6mg. I didn't really expect it to get me off of cigarettes, but I have not had an analog in....in....well, you see, I didn't note the date because I didn't expect it to work. I cannot tell you how happy I am to be free of cigarettes! I think it's been a couple of months, but I never looked back, and don't expect to ever smoke again. I did not gain weight, actually, I forget to eat dinner because I'm enjoying my vape juice so much! Sometimes I find myself vaping out of habit or taste and put it away, buy that doesn't concern me because I am nicotine free, or 6mg. I smoked cigarettes, more than half a pack a day, for over 25 years. I thought I could never stop, but here I am, cigarette free, not even missing them. Don't worry so much about vaping constantly......but if it worries you, make that effort to put it down unless you feel the urge. Good luck, and thank God for Ecigs!