In this diploma thesis I´m trying to describe a process of working on an author performance inspired by a book, threw analysis of my own author performance called Gog. In the introductory chapter I try to outline some similarities between working on a screenplay, as Jean-Claude Carriere speaks about it in his book Telling a story and working on a performance, if we are two, we are directors, actors, dramaturgists and we are inspired by a book. In next chapters I speak about the theme and the form of the book Gog, and afterwards I describe in detail what interested us and which main theme we chose for our performance. In the main part of this thesis I describe in detail the process of rehearsing different parts of the performance and I analy...