The book "Think in your head" is a textbook on psychology, written by famous authors Stojan and Harry. The book examines in detail various aspects of the human mind, from thought processes to the influence of emotions on decision-making. The authors explain complex psychological concepts in simple and accessible words, citing examples from real life. The book "Think in your head" will be a useful source of knowledge for those who are interested in psychology and want to better understand themselves and other people.