Srila Prabhupada states that if a devotee becomes completely pure in his chanting of the Hare Krishna mantra, free from the ten offenses against the holy names, he becomes jagad-guru, the spiritual master of the entire universe and that under his influence the entire world will take up the wonderful enlightening process of Krishna consciousness. This means that you have a potential global spiritual revolution right there in your bead bag. All you have to do is become perfect in your chanting of the Hare Krishna mahamantra. By doing so you can save the entire world from its present darkness and misery.