Also, that during the life of a human being, that adolescence comes cancel childhood, old age comes cancel youth. It is as the deprivation is often canceling the success, poverty just cancels the wealth, the unfortunate just cancel the fortune. At the heart of all these dualities, the human being must struggle to keep themselves in the position that he is comfortable: it is the object of our research and our struggles. The manager who has become aware of its responsibility should know that in any dynamic actions, the positive and the negative mix and that human effort that always gives the top on the positive to make life and progresses.