You are to be congratulated for your efforts to stop smoking. It is "hard as hell". Whatever else you do, you must stop smoking if you are going to preserve your present lung function and not lose more. The use of nicotine replacement therapy and Wellbutrin® (bupropion) can help make quitting easier. The newest smoking cessation medicine, Chantix® (varenicline), was recently released. A number of reliable reports suggest that it may even be more effective than the other two. You should make up your mind to quit. Then ask your doctor about these options. Everyone in the United States has free access to telephonic counseling for quitting tobacco at Quitline (800) QUIT NOW. You may want to look at our giving up smoking information at http://www.nationaljewish.org/disease-info/wellness/smoking/index.aspx for ways to help you quit smoking. Also check with your doctor for other quit smoking resources in your area.
Chronic bronchitis is probably the cause of your cough. This is a cough with mucus that lasts for at least 3 months in a row 2 years in a row. Your chest x-ray and spirometry may be normal with chronic bronchitis. Most instances of chronic bronchitis are due to cigarette smoking. However it is important to have periodic chest x-rays to be checked for lung cancer. Also ask your doctor if he would order sputum cytology. This is a screening test to detect cancer early, sometimes even before it is visible on a CT scan. Sputum or mucus that is coughed up from the lungs is examined for cancer cells.
There are a number of good medicines to help with your breathing. You might benefit from Advair™ Diskus® (fluticasone/salmeterol) either alone or with Spiriva® HandiHaler® (tiotropium bromide inhalation powder). You might also ask your doctor to check your blood oxygen level. It could be low and the cause of your shortness of breath. Finally you should have pulmonary function tests (PFTs) to get an accurate measure of your current lung function and perhaps guide therapy.
You should walk more, every day. Also consider other exercise as well. When done routinely, this conditions the entire body so that the muscles are working as efficiently as possible. This allows the breathing muscles to use the least amount of energy to move air in and out of the lungs. Over time this helps to lessen shortness of breath. You might want to consider pulmonary rehabilitation. This is a program to maintain or bring back your quality of life through aerobic exercise done on a regular basis. Some programs will also include education about your lung condition and nutrition. Please read our pulmonary rehabilitation information at http://www.nationaljewish.org/disease-info/diseases/copd/mgmt/pulm-rehab/index.aspx to learn more. Share this information with your doctor to see if this would be helpful and where in your area there are programs.
You should try to find a support group which will help you to mentally get stronger about yourself. Try to find some activities which will help to get away from smoking