DBT was originally developed to treat people who struggle with borderline personality disorder and is very effective in reducing and managing symptoms. At the start of therapy, clients meet with their therapist and develop an individualized treatment plan. During DBT Skills group sessions, clients learn mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness skills. During DBT individual sessions, clients learn how to apply the skills to their daily lives. The length of treatment depends on the unique treatment needs of each individual client. However, treatment typically lasts two years. Since many people with borderline personality disorder also have significant trauma histories, many clients choose to participate in DBT PE trauma therapy.