This is not an exhaustive book that covers all topics, although it highlights important aspects of the subject that can help people get to know themselves. You will not find here magic formulas or sweetener phrases that "cure" the problems. There are no perfect medicines or wonderful techniques. On the contrary, all the information written here has a scientific basis that guides us to understand the most beneficial causes, symptoms, and behaviors to manage and combat mental disorders effectively. It is a brief summary available to all. The knowledge and management of essential aspects of our psyche has always helped to strengthen us safely, to be able to face the challenges of life and overcome them. Only the love, interest and effort we put in will change negative results to positive ones.