Actually I did for about 6 years, Cold Turkey. After having a heart attack. I started back with just one cigarette while my father was in surgery for lung cancer about 5 years ago.
It drives my cardiologist crazy every year after doing my stress test and bloodwork. He always says " your heart is in great shape. Your bloodwork is good without any medications. If not for the stent I could not tell that you had ever had a heart attack. But..but you smoke." He also starts each vist off with " Have you quit smoking yet?"
I'm ready to quit again. I just have to decide on a quit date and inform the spousal unit to expect a couple of weeks of irritability. I need to get a good bike light too. Last time I did it, going for a short walk every time the urge hit helped. The urge only lasts a short time, after the first week or so. This time I want to go for a ride instead of a walk. Replace one bad habit with one good one.