There is an overview of the main types of anxiety and anxiety disorders, as well as, the current views of the etiology, development and treatment of anxiety and anxiety disorders. A neurocognitive model, and the neurobiological mechanisms of anxiety, and also, the non-medication treatment methods for anxiety disorders. The book is intended both for those who are going to overcom their own anxiety and anxiety disorder by themselves and/or with the help of a specialist, and for the professionals of mental health and related fields (psychologists, psychotherapists, psychiatrists, neurologists, social workers, special pedagogues/educators, and others) who want to help their clients. The book is based not only on the professional, but also personal experience of the author.