There is no doubt that we all feel the successive changes taking place around us in various fields, and there is no doubt that the beginning of the twenty-first century, the beginning of the third millennium, represents for us a turning point and a starting point with new and unique concepts and frameworks that allow us and our institutions the opportunity to confront the challenges and changes of this new century, which makes us stop for a while and think and seriously contemplate the integrated approach to developing human performance presented by the book that is now in your hands, which has now become the focus of attention of leaders and administrative cadres as an effective alternative to the traditional training approach.