Why borderline personality disorder is considered the “most difficult” to treat. Borderline Personality Disorder (BPD) is defined by the National Institutes of Health (NIH) as a serious mental disorder characterized by a pattern of persistent instability of mood, behavior, self-image, ...

People who are emotionally healthy are in control of their thoughts, feelings, and behaviors. They are able to face life’s challenges. They can keep problems in perspective and recover from encounters. They feel good about themselves and have a good ...