It's not too late to quit smoking. Quitting smoking at any age helps your circulation, your stamina, your skin, and your general health. Your risk for coronary heart disease, a common cause of death and disability as people get older, is halved after only a year without smoking. Quitting smoking also reduces the likelihood of your getting respiratory problems and lung cancer.
Smoking is an addictive habit.
Most former smokers made several attempts to quit before they were finally successful. Just keep trying. Set a quit date. Set a date for when you will stop smoking. Don't buy cigarettes to carry you beyond your last day.