Just cold turkey. About 30 years ago, I was on Supervisors Roy Ashburns staff and we were setting up his both at a county fair. Next door to his booth the Red Cross was setting up a stop smoking booth and were setting up this see-thru manician type machine that smoked cigarettes. As the machine smoked you could see into the lungs filled with angel hair.. I watched this be set up and turned on with a clean white pake of angel hair. At the end of the evening when we were tearing down, I jumped over the booth to watch the Red Cross folks cleaning up the maninian after a couple cartons of puffs. When they opened up the clear plastic lungs the tar and nicotine they poured out filled half of a large coffee can and the smell had me dry heaving my baby toes up... Gross as hell, and the last night ever that I smoked a cigarette. I can't believe people can live as long as they do filling their lungs with this garbage...