When you ask yourself about how to quit smoking you can go ahead and just "do it", or you can approach it academically, which means read about it for the end of days, and do nothing. Anyway for those of you who like and prefer to read over doing (which I honestly don't recommend), here is some academic info:
Smoking is one of the major causes of preventable death around the world, and learning to quit smoking is one of the most beneficial things you could do for your body. What happens when you stop smoking can be immediately seen, though there's still the dreaded withdrawal syndrome that will be experienced as a result of quitting something addictive - nicotine, a prime component of cigarette and tobacco, is addictive, after all. Anyone who is thinking about smoking should not think twice. There will be side effects, differing in intensity, depending upon how deeply a particular smoker is addicted, the smoker's physical condition, and hereditary predispositions.
In other words, overcoming the physical addiction with the technical and psychological addiction with another technique at the same time. Reality they are easier to handle the physical addiction. There are patches, pills and gums that can be used if necessary.