Thirty-five years ago, anxiety did not exist as a diagnostic category, and today it is the most common form of officially classified mental illness. Scott Stossel talks about his own struggles with anxiety, and about the history of efforts by scientists, philosophers, and writers to understand the condition. In My Age of Anxiety , he reports on famous people who struggled with anxiety,  how it has afflicted generations of his own family, and the many psychotherapies, medications, and other treatments that have been developed to address it.