Dialectical behavior therapy (DBT) is a treatment that was originally created by Marsha Linehan and her team to treat individuals with borderline personality disorder (BPD). Folks with BPD have what’s called pervasive emotion dysregulation—in other words, they struggle to identify what they’re feeling, don’t have the skills to effectively manage the emotions that arise, and end up turning to problem behaviors (such as suicide attempts, self-harming behaviors, or substance use), in an attempt to cope.