Borderline Personality Disorder has been considered difficult to treat over the years. However, with new, evidence-based treatment, many individuals with this disorder now experience less or even no symptoms, thus improving their quality of life. What causes borderline personality disorder (BPD) is a subject of much debate. Although there is a vital genetic component to the disease, various environmental factors can trigger mood swings, increased anxiety levels, and unstable relationships in sufferers. Besides, individuals suffering from BPD tend to turn to alcohol or drugs to alleviate their moodiness, feelings of emptiness, or low self-esteem. These factors all contribute to the feelings that people with BPD have about themselves.