I started at around 15, quit for 7 years in my mid-20s, started back up again for 2 years, then quit again (for good) a few years ago. I used Zyban the first time, but had an allergic reaction. Last time, cold turkey and a healthy dose of determination, plus that fewer and fewer friends smoked.
DH has struggled with quitting more than me, and still uses the nicotine gum pretty much every day. I have just never wanted to pick up a cigarette again once I got that damned monkey off my back for the last time.
“One day your life will flash before your eyes. Make sure it's worth watching.”
Gerard Arthur Way