the word personality means the mental aspects -trait (ditiguishing features) and charateristics and behaviors of a person such as moods (feelings) - quiet,loud happy sad rambunctious rude polite, excited, depressed and so on. someone with a borderline personality is someone who has trouble keeping their moods stable and even. basically jumping from one to another and to the extreme like sudden bursts of anger or saddness, fear. suicidal and self mutilation activities and always feeling like they are missing something (emptylike). Id go with your therapist or get a second opinion by doing a comprehensive psychological Evaluation with a psychiatrist. like you said no one here is a therapist and can tell you either way if you have borderline or not. thats up to the professionals.