The lady I work with was 59 when she quit. She had smoked 2 packs of Marlborough Reds per day for over 43 years and she had developed COPD. She started taking Chantix and she also swore by this website for the forums:
http://quitsmoking.about.com/?nl=1
She also used to use some sort of quit-o-meter on her computer, and every day it would pop up and give her the amount of life she saved (like 2 days of life saved), and then the amount of money she saved by not buying cigarettes. I don't know how accurate it was but it certainly helped her have some type of gauge. I asked her for that web site but she doesn't have it anymore, but she gave me the above link.
Another lady I train on Monday and Wednesday mornings quit smoking one year ago and decided to start with some physical fitness. When she came to me she would be out of breath walking up stairs. Now she is doing a solid 45 minutes of aerobic exercise three times a week without losing her breath. It took awhile, but she's doing great. (She has also lost 30 pounds and her blood pressure is significantly lower!) One good change leads to another.
Good luck again, I love hearing 'I am quitting!' from anyone!