On quitting smoking  Famous Auther Mark Twain has said,

Giving up smoking is the easiest thing in the world. I know  because I've done it thousands of times.
Mark  Twain

We all know that smoking is hazardous for the health even this caution comes on the pack of the cigrate but still those who smoke finds hard to quit

 Whenever you’re tempted to light up, take a look at all the ways smoking can damage your health:

• Increases risk of lung, bladder, pancreatic, mouth, esophageal, and other cancers, including leukemia
• Reduces fertility
• Contributes to thin bones
• Affects mental capacity and memory
• Reduces levels of folate, low levels of which can increase the risk of heart disease, depression, and Alzheimer’s disease
• Increases likelihood of impotence
• Increases risk of heart disease, stroke, high blood pressure,dibetes.

so smoking is not bad for a smoker but even for society, so whats your opinion to quit

smoking ? If you are smoking, is it difficult to quit smoking once or thousand times !