In this article we first contextualize and then outline a model of TFP adapted for working with adolescents with Borderline Personality Disorders. We discuss how to take the normal developmental challenges of adolescence, such as separation-individuation in consideration, and how to support this in the context of the therapeutic work, while at the same time stimulating curiosity through clarification and confronting the adolescent with self-defeating and destructive patterns and dangerous behavior. Furthermore, we give examples of working with split–off parts of self and other representations through clarification to increase self-awareness and confrontations with contradictions within the adolescents communication and nonverbal behavior, with the aim of facilitating the integration of identity.