Look around and compare happy and unhappy acquaintances. What is the difference? Happy start a new business, study at pieces of training, go in for sports, constantly travel learn something new. Unhappy people have been working at the same job for decades, having fun only with the help of beer and are constantly looking for those guilty of their failures. The answer to our question is simple - it is necessary to engage in self-development in order to become happy. This book will help you in personal development to achieve great success in your personal life.