This book briefly discusses questions about the self-consciousness of man as a biosocial being, answers to the questions: "Who is man?," "What is happiness and success?" - in the light of neurophysiology, biological processes and social society. If we proceed from Marxist philosophy, then it can be argued that the process of scientific knowledge is a movement from living contemplation to science and back from it to practice. A person begins the study of the world with the environment initially in order to satisfy his needs, and the questions of studying himself mature later, which became the subjects of discussion in religion, philosophy, psychology, and subsequently in the fundamental sciences. Using integrated knowledge derived from basic sciences and other disciplines to live contemplation of oneself as an example of the movement from scientific knowledge to practice will help to better navigate and find its place in the modern world. From this point of view, non-fiction plays an important role.