Book 2: Linguistic Action - The Psychology of Communication and Motivation. The motto: "I want to become and be my own manager." I, the author, have been teaching staff in communication science for fifteen years now. About ten years ago, I heard that the company X Microscopy in Wetzlar had already dismissed the third interior designer who was supposed to design the new office spaces because he did not involve the people working in those spaces and only consulted with the client, the department manager. I was asked by the marketing department manager to carry out this interior design planning, as he believed there was a communication problem. At that time, I was dealing with topic-centered interaction, known as TZI, from the field of language psychology in my communication classes.