How long it takes to quit smoking depends mainly on the quitter’s perseverance in quitting smoking and reasonable measures to quit smoking. Most people are able to achieve the goal of quitting smoking by taking about six months through standardized means of quitting, perseverance and persistence of the quitter. These people are able to quit tobacco completely by getting rid of their physical and psychological dependence on tobacco in a gradual manner, generally through a combination of alternative smoking therapy, distraction therapy, and regular supervision of quitters by family members and doctors not to smoke in order to achieve the ultimate goal of quitting, and for people who have been smoking for a longer period of time and have poorer self-knowledge, the time needed to quit smoking is even longer.