The purpose of this paper is to explain motivation in terms of the most important motivational theories. Analysis and treatment on this topic is not comprehensive, as this theme or issue itself is much wider, but I have only addressed a few points or elements that are essential and are the most important. I have tried to present an analysis and description of the role of motivation in the behavior of an individual or group to accomplish many goals to achieve greater success both in the career development and the organization. Motivation as a concept is a key element of virtually every human activity, whether it be an individual, group, team or business organization. Without motivation or without stimulating work, achieving a particular goal...