Dear Arif,
At first take my love. Anyway I know that you have become a heavy smoker. But my brother you don't know the danger of smoking. Smoking is a bad habit & you should not take it as a fashion. It is true that a non smoker can expect to live longer than a smoker. Most of us are not aware of bad effects of smoking. It may causes cancer, heart attack & other diseases. It contains different acids. I hope you will stop smoking as soon as you get my letter.