What Is Parts Work? Understanding IFS in Plain Language By Chris Peressotti, RP | 2026-02-05 | 7 min read Parts work is a way of understanding your mind that assumes you're not a single unified voice. Where does the idea of 'parts' actually come from? The concept of parts is at the centre of Internal Family Systems, developed by Dr. Richard Schwartz. What does 'working with parts' actually involve? In a session, parts work usually starts with slowing down and noticing. Frequently Asked Questions Is parts work the same as IFS therapy? Parts work is the practice; IFS is the specific model that systematizes it. Can parts work help with anxiety or depression? Yes, and often more sustainably than approaches that target the symptom directly. Chris Peressotti is a Registered Psychotherapist (CRPO #14496) and IFS Level 1 trained therapist at Memory Door Psychotherapy in Toronto.