Smoking is very harmful. First, smoking costs a great deal of money. It wastes 200 billion dollars each year in the world. Second,smoking does harm to the health of smokers and even the people near them. Smoking is one of the major causes of lung cancer. About 3 million people die of diseases caused by smoking every year.
Then how to stop smoking? Firstly, throw about all your cigarettes. Secondly, do more exercise as soon as possible! Thirdly, when you want to smoke, just caution yourself by telling yourself how harmful smoking is. Last but not least, try to do something to live life to the fullest.
What we can do to persuade people from smoking? It needs a long period, we should remind smokers of the harm of smoking. Tell them what he does can affect his and other's health as well. Then make attempt to give practical advice to help him stop smoking. Also we should help him keep a possitive attitude towards life.