The book is written in the genre of library training and contains materials that will help 14-18 year old teenagers solve problems associated with self-doubt, frequent experiences of fears, anxieties, and feelings of failure. The author introduces readers to the techniques of self-diagnosis, self-analysis, and methods of self-development that allow them to better understand themselves and other people and cope with difficult situations. The publication may also be of interest to adults - those who work professionally with teenagers, and, of course, parents who want better get to know your children and help them.