Which statement made by a patient diagnosed with borderline personality disorder indicates the treatment plan with Dialectical Behavior Therapy (DBT) is effective?

Dialectical Behavior Therapy is a structured evidence-based treatment specifically designed for borderline personality disorder. Its core skills include distress tolerance, emotion regulation, mindfulness, and interpersonal effectiveness. A key treatment goal is replacing self-destructive behaviors — such as self-cutting — with adaptive coping strategies. The statement in which the client says they felt empty and wanted to cut themselves but called the nurse instead is the strongest indicator of DBT effectiveness, because it demonstrates that the client recognized an emotional trigger, experienced the urge to self-harm, and chose a healthier alternative behavior (reaching out for support) — precisely the skill set DBT trains. Saying the nurse is the best nurse is an example of idealization, which is characteristic of the splitting defense mechanism seen in borderline personality disorder and does not indicate therapeutic progress. Expressing hatred toward the doctor reflects devaluation, the other pole of splitting, and again indicates persistent pathological thinking. Claiming never to use drugs again is an all-or-nothing absolutist statement that does not demonstrate the dialectical balance and skills-based coping central to DBT. Only calling for help instead of self-harming reflects genuine application of DBT distress tolerance skills.