According to the IFS website, Internal Family Systems is a powerfully transformative, evidence-based model of psychotherapy. We believe the mind is naturally multiple and that is a good thing. Our inner parts contain valuable qualities and our core Self knows how to heal, allowing us to become integrated and whole. In IFS all parts are welcome.
IFS is a movement. A new, empowering paradigm for understanding and harmonizing the mind and, thereby, larger human systems. One that can help people heal and helps the world become a more compassionate place.
Here is founder Dr. Richard Schwartz explaining IFS in his own words.