What is Parts Work?
Parts work is a therapeutic approach grounded in the premise that the human psyche is not a singular, unified entity but rather a system of distinct subpersonalities—commonly called ‘parts’—each with its own feelings, beliefs, memories, and intentions. Rather than viewing inner conflict as pathology, parts work treats multiplicity as a normal feature of human consciousness. The goal is to identify these parts, understand their protective roles, resolve internal conflicts, and facilitate integration so the various parts work together harmoniously.
The approach is not a single modality but an umbrella term encompassing multiple therapeutic traditions that share this core insight: we contain multitudes, and psychological health involves learning to relate compassionately to all aspects of ourselves.
Origins & Lineage
The concept of psychological multiplicity has ancient roots but gained therapeutic structure in the 20th century. Sigmund Freud’s structural model (id, ego, superego) and Carl Jung’s work on the collective unconscious and archetypal personalities provided early frameworks for understanding the divided self.
Roberto Assagioli (1888–1974), an Italian psychiatrist and contemporary of Freud and Jung, developed psychosynthesis in the early 20th century, explicitly naming ‘subpersonalities’ as early as 1911 and considering them a chief point of his therapeutic system. Assagioli understood subpersonalities as semi-independent nuclei carrying different tendencies and social roles, requiring synthesis into a larger organic whole guided by a higher Self.
Fritz Perls developed Gestalt therapy in the 1940s–1950s, introducing the empty chair technique—a method for externalizing and dialoguing with different aspects of self. Though not explicitly ‘parts-based,’ Gestalt therapy’s experiential approach to internal conflicts influenced later developments.
Drs. Hal Stone and Sidra Stone founded Voice Dialogue in the early 1970s after meeting in 1972 and marrying in 1977. Their Psychology of Selves distinguished between ‘primary selves’ (which form the ego or personality) and ‘disowned selves’ (the shadow), teaching practitioners to facilitate direct dialogue with these subpersonalities through the Aware Ego Process.
John G. Watkins (1913–2012) and Helen Watkins developed Ego State Therapy in the 1960s–1970s, publishing their definitive text Ego States: Theory and Therapy in 1997. Working primarily with highly dissociative clients and trauma survivors, they applied principles from psychoanalysis, psychosynthesis, and clinical hypnosis, treating the personality as a ‘family of self’ with semi-independent ego states.
Richard C. Schwartz (born 1949) developed Internal Family Systems (IFS) in the 1980s while working as a family therapist at the Institute for Juvenile Research in Chicago. Unlike his predecessors, Schwartz arrived at parts work through systems theory rather than psychoanalysis or trauma treatment. He noticed clients with eating disorders spontaneously described inner ‘parts’ that behaved like family members. He founded the Center for Self-Leadership (later the IFS Institute) in 2000. His 2021 book No Bad Parts brought IFS to mainstream audiences. In 2015, IFS was listed on the National Registry of Evidence-based Programs and Practices.
How It’s Practiced
Parts work sessions typically involve identifying a part that is active or causing distress, then establishing direct communication with it. The practitioner helps the client develop curiosity rather than judgment toward the part.
In IFS, the therapist guides the client to ‘unblend’ from the part—creating separation so the Self (a state of calm, curiosity, and compassion) can relate to it. The client may notice physical sensations, emotions, images, or inner voices associated with the part. The therapist asks questions like, ‘How do you feel toward this part?’ If the client reports criticism or fear, that indicates another part is present, and further unblending is needed.
In Voice Dialogue, the facilitator invites a specific ‘self’ (e.g., the Inner Critic, the Pleaser) to literally speak from a different physical location in the room. The client moves to a new chair and embodies that part fully, allowing the facilitator to interview it directly. Afterward, the client returns to a neutral ‘Aware Ego’ position to witness the experience.
In Ego State Therapy, often combined with hypnosis, the therapist speaks directly to ego states, particularly those holding traumatic memories. The approach uses family and group therapy techniques adapted for the internal system.
Gestalt therapy’s empty chair technique invites clients to place a part (or a person) in an empty chair and speak to it, sometimes switching chairs to ‘become’ that part and respond.
Parts Work Today
Parts work has moved from the margins to mainstream therapeutic practice. IFS in particular has gained significant traction, with training programs worldwide and integration into trauma treatment protocols. The IFS Institute offers professional certification at multiple levels.
Seekers encounter parts work through individual therapy, group workshops, retreats, and increasingly through self-help literature. Books like Schwartz’s No Bad Parts and Introduction to Internal Family Systems provide frameworks for self-guided exploration. Online courses, podcasts, and recorded sessions make the approach accessible beyond the therapy room.
Trauma therapists including Bessel van der Kolk and Gabor Maté have endorsed IFS as a cornerstone of effective trauma treatment. The approach has been applied to depression, anxiety, addiction, eating disorders, and complex PTSD.
Voice Dialogue and psychosynthesis maintain smaller but dedicated followings, with training centers in Europe, Australia, and North America. Ego State Therapy remains prominent in hypnotherapy communities.
Common Misconceptions
Parts work does NOT mean you have multiple personalities or Dissociative Identity Disorder. Multiplicity of self-states is considered normal, not pathological. DID involves severe dissociative barriers between parts; parts work addresses the ordinary multiplicity present in all people.
Parts work is not about eliminating or suppressing parts. The approach assumes every part developed for a reason and carries positive intention, even when its strategies are destructive. The goal is understanding and integration, not eradication.
Parts work is not purely cognitive or metaphorical. While parts may initially seem like abstractions, practitioners and clients report that parts have distinct felt senses, perspectives, and even ages. The approach is experiential rather than intellectual.
Parts work does not require visualization. Some clients ‘see’ parts as images; others sense, feel, or simply ‘know’ them. All modalities of awareness are equally valid.
Parts work is not quick or linear. Deep integration takes time. A single part may need multiple sessions; new parts emerge as work progresses.
How to Begin
For professionally guided work, search the IFS Institute therapist directory at selfleadership.org for certified practitioners. Ego State therapists can be found through hypnotherapy associations. Voice Dialogue facilitators maintain directories at voicedialogueinternational.com.
For self-directed exploration, begin with Richard Schwartz’s No Bad Parts (2021) or Introduction to Internal Family Systems. Hal and Sidra Stone’s Embracing Our Selves: The Voice Dialogue Manual (1989) provides another accessible entry point.
Start by noticing conflicting impulses in daily life—the part that wants to speak up versus the part that stays silent, the part that craves rest versus the part that pushes forward. Name them. Ask what each part fears would happen if it stepped back. Practice curiosity rather than judgment. This is the beginning of Self-led relating to parts.