This manual builds on a millennial heritage to apply strategy that has come down to us from ancient Asia. Because the recommendations provided by its author, Sun Tzu, do not lose validity despite being more than 2,500 years old. It is known that it inspired many historical figures such as Napoleon or Machiavelli, and even in the strategies of the Vietnam revolutionaries. But all these applications were in the context of the war. Instead, the adaptation I made focuses on change management for managers. Because this treatise provides wisdom, common sense recommendations. Because in my own experience of studying commercial engineering and even obtaining a MBA, I felt many times that I did not have the wisdom to apply an organizational change. I will give a concrete example of the adaptations that I will make in the next chapters. The art of war says "The best victory is to win without fighting", my adaptation to the theme of this manual being the following "The best organizational change is that it is achieved without demands, disassociations or a worsening of the organizational climate". Because when I speak of wisdom, I am actually speaking of common sense.