This is an explanation of how I feel after being smokenicotine free for 18 days (my quit date was on January 22 2012) If you are seriously interested in trying to quit then I would suggest you check out a free software product called "SilkQuit" which is a computer application that helps keep track of how much money you saved from quitting; the amount of cigarettes you did NOT smoke; the length of time you have quit for AND and estimated period of time in terms of how your life expectancy has been increased due to quitting. SilkQuit Link: www.silkquit.org