Anyone who has tried to quit smoking, including those with COPD, knows that everyone faces different hurdles. “It’s not one size fits all,” says James Davis, M.D., medical director of the Duke University Smoking Cessation Clinic in Durham, NC. “Some people have a genetic predisposition to being dependent on nicotine.” Others smoke because of depression, stress management, or weight issues. Each person’s challenge requires a customized quit-smoking strategy, says Dr. Davis. Click through for some strategies that successful quitters have employed on their own.