How To Write Borderline Personality Disorder . Bpd is one of many personality disorders that causes a person to experience high “highs” and low “lows.”. Just keep the person always doing alot of things , but never finishing them. borderline personality disorder quotes Google Search from weheartit.com Borderline personality disorder can damage many areas of your life. Showing your love and support will make them more willing to see your point of view and help them understand your desire for healthy boundaries. Their feelings for others can change quickly, and swing from extreme closeness to extreme dislike.