All Parts Are Welcome, and All Behaviour Isn't: Compassionate Boundaries in IFS Therapy
“All parts are welcome” is one of the most recognisable principles of Internal Family Systems (IFS) therapy. It invites us to approach our internal experiences with curiosity and compassion, recognising that even our most difficult parts have developed protective intentions. Yet this principle raises an important question: What does it actually mean to welcome a part when its behaviour is causing harm?
A part might become angry, controlling, critical, withdrawn or impulsive. Its protective intentions may be understandable, particularly when we consider the experiences that shaped its role. However, the impact of its behaviour can be significant, both inside and outside. This is where we need to distinguish clearly between welcoming a part and accepting everything it does.
"All Parts are Welcome" in IFS Does Not Mean Abandoning Self Leadership
In IFS, Self-leadership involves developing a relationship with our parts in which they can be heard, understood and supported, while Self retains agency for the direction of the internal system. A protective part may become so blended that it dominates our thoughts, emotions and behaviour. It may feel as though its perspective and strategy are the only ones available. However, through unblending, Self can acknowledge the part's fears and intentions, and boundaries around its behaviour can be established. For example, an angry protector may need to know that its concerns will be taken seriously. It may also need to learn that expressing anger through intimidation or aggression is not acceptable. While the part deserves compassion, it's strategy requires boundaries. Compassionate boundaries create the conditions for safety, both internally and in our relationships with others.
All Parts Are Welcome in Relationships Too
The principle extends beyond our internal systems. When a partner's behaviour causes harm, understanding their protective parts can help us develop compassion for their experience. It can also help us recognise the parts of ourselves that feel hurt, frightened or violated. Those parts deserve our attention and protection, and we can acknowledge that another person's behaviour may emerge from trauma, fear or protective intentions while maintaining clear boundaries about what is acceptable in a relationship. We can also become curious about the parts responsible for the behaviour that caused harm. This curiosity can support accountability and meaningful change. Understanding someone's parts does not remove their responsibility for their actions.
When IFS Language Becomes a Weapon
The premise that everyone has Self and parts is intended to foster compassion and connection. It can become harmful when used to dismiss another person's experience. For example, someone might respond to a partner's concerns by declaring, “You're just blended with a part. I'm in Self.” This can become a way of invalidating the other person's experience, avoiding accountability or positioning oneself as psychologically superior, or more evolved. Ironically, the urgency to defend one's Self energy can itself suggest that a protective part has become blended. Self leadership includes the capacity to recognise our own limitations, remain open to feedback and take responsibility for the impact of our behaviour.
What Does It Really Mean to Welcome All Parts?
Welcoming all parts means recognising their presence, respecting their protective intentions and remaining curious about their experiences. It also means establishing boundaries that support the safety of the whole system. We can welcome the part that feels angry while protecting the parts that feel frightened. We can understand a controlling protector while supporting the parts affected by its behaviour. We can approach our own parts with compassion while taking responsibility for how we treat others.
In IFS, all parts are welcome, and Self remains responsible for leadership.
That is the distinction that allows compassion and accountability to exist together.
About the Author
Sean Cuthbert is a Clinical Psychologist, Psychology Board of Australia (PBA) Approved Supervisor, Certified IFS Therapist, and IFS-I Approved Clinical Consultant in private practice in Melbourne, online throughout Australia, and internationally. He provides 1:1 therapy for clients, and supports professionals through individual and group supervision/consultation.
