Martha Sweezy, PhD is an Assistant Professor, part-time, at Harvard Medical School and a program and research consultant, and supervisor, at the Cambridge Health Alliance. Her latest book, Internal Family Systems Therapy for Shame and Guilt explores shame and guilt from the perspective of Internal Family Systems therapy (IFS). She is also the author or co-author of several journal articles on IFS; a co-editor and co-author of two chapter books on IFS; and a co-author of five other books on IFS.