Toni Herbine-Blank, MS, RN, Cs-P, is a senior trainer for the Center for Self-Leadership and the sole developer of Intimacy from the Inside Out (IFIO). She runs trainings, retreats and workshops on both methods nationally and internationally and has a private psychotherapy practice in Durango, Colorado. For more information: toniherbineblank.com.

Donna M. Kerpelman, JD, MS, has been immersed in IFS for more than ten years as a student, teacher and therapist. She has organized and facilitated several IFIO retreats for couples in addition to assisting in IFIO trainings for couple therapists. She also brings her knowledge of IFS and relationships to the legal world where she represents children with lead poisoning.

Martha Sweezy, PhD, has a therapy and consultation practice in Northampton, Massachusetts. She is a clinical supervisor at Cambridge Health Alliance, a Lecturer in Psychiatry at Harvard Medical School, an occasional helper at IFS trainings, and co-leads workshops on the topic of shame. She is author of several articles on IFS and co-editor, with Ellen Ziskind, of two volumes on IFS: Innovations and Elaborations on Internal Family Systems Therapy and Internal Family Systems Therapy: New Dimensions. For more information: http://marthasweezy.com