There are some who go through life performing routine tasks reasonably well, but without the feeling that there is any great importance attached to what they do or that it would make any difference if the work were never done.Only a realatively few individuals are driven by a deep conviction that what they are doing is important and that they have a distinctive mission to perform in doing it well..These few are the ones who change things for good or for evil, who largely determine the course which the world will take .