My motivation to quit was in 78.I had been smoking for 38 yrs.I was trying to hold some of those .002 tolerances (mentioned in a earlier thread)on a manual Bridgeport Mill and looking into the work piece,the smoke kept getting in my eyes and I stood up really p-----and said to my self.Who is in control here? I walked to my tool and snuffed out the cigarette and reached in the tool box and removed the pack threw it in the trash can and have never smoked since.It took a lot of will power to quit,but I made it.