People who know what they're talking about.

David Barlow and Michelle Craske are renowned experts in Agoraphobia and Panic. They developed a proven step-by-step program at the Boston University Center for Anxiety & Related Disorders.

Mastery of Your Anxiety and Panic is a self-help workbook that is best used in consultation with a therapist or anxiety coach, but can be used on your own.

To find a therapist or coach, check out this article on ways to find help (in-person and virtual).