Do you worry that you’re overly shy or constantly doubt everything? Can’t sleep properly because you’re worrying about your job, your health, or your relationships? Are you afraid of heights—or do you get a panic attack when you get behind the wheel? The reason is that anxiety states are based on irrational beliefs that make you vulnerable and can lead to depression, says psychotherapist David Burns, author of the international bestseller “Feeling Good” and one of the founders of cognitive behavioral therapy. In his new book, he offers 40 simple yet effective techniques to help you understand the causes of your anxieties, cope with negative thoughts, and overcome your fears. Dr. Burns also shares the results of research on medications usually prescribed for depression—and explains why sometimes they can cause more harm than good.