She graduated from Dartmouth College, received her Ph.D. from Virginia Polytechnic Institute and State University, completed her internship at Harvard Medical School, and served on the staff of the Center for Anxiety and Related Disorders at Boston University where she directed their Adolescent Panic Treatment Program. She has published several book chapters and professional articles on anxiety. Dr. Mattis received her certification in Hypnotherapy from Winchester Hospital and is a Certified Reiki Master Teacher. The founder of Calm Spring Healing, Dr. Mattis incorporates principles of positive psychology within her work, helping individuals thrive, tap into their deepest potential, and realize the creative power of the mind.