BORDERLINE PERSONALITY DISORDER:
A person with borderline personality disorder, much like the narcissist, is most likely not working on the same maturity level you are, does not pick up on social cues, and knows little to no boundaries. Someone with this disorder might have lack of control over emotions, difficulty maintaining relationships, lack empathy for others, and avoid accountability for actions. Some tell-tale signs might involve cutting, substance abuse, shoplifting, or other impulsive behaviors.
HOW TO DEAL WITH SOMEONE WITH BORDERLINE PERSONALITY DISORDER:
Acknowledge the person’s feelings. If she has become suddenly very upset, you might say: “I see you’re quite upset. Can we discuss what’s going on?” Make your points clear and concise. If things get too elevated, suggest that the two of you revisit the topic in an hour or so and explain that you want some time to think about what she said. Try putting the responsibility back on the person and ask them for possible solutions. Don’t bow and bend to appease the person but, again, lead by example and stay calm.
EXAMPLES OF BORDERLINE PERSONALITY:
Alex Forrest (Glenn Close), Fatal Attraction (this example is commonly used and often criticized for being an extreme case and negative example); Brenda Chenowith (Rachel Griffiths), Six Feet Under; Joan Crawford (Faye Dunaway), Mommie Dearest; and David McCall (Mark Wahlberg) Fear.
You know who I’m talking about. You might have a PhD in Psychology but they know more about mental illness than you do because they once read a pamphlet about depression. This person is overbearing, thinks he has all the answers, isn’t willing to listen to the opinions of others, and may even consider the fact that you have an opinion as offensive. He might be boisterous and loud, enjoying the sound of his own voice and assuming everyone else does, too.
HOW TO DEAL WITH THE KNOW-IT-ALL:
Keep it respectful but do so without putting yourself down. If you must have a confrontation with him, do it when the two of you are alone so as not to bruise his ego. Gently offer alternatives to his line of thinking in a way he won’t misconstrue as being attacking.
Ask your questions in a manner of “seeking clarification”, rather than flat-out disagreeing. Ask for specific details. Provide some attention to the know-it-all (since that is what he is after) but not too much. If he is offering unsolicited advice or harping on a topic that is irrelevant to his business with you, kindly explain that you are not interested in discussing that topic with him and move on to something else.
EXAMPLES OF KNOW-IT-ALLS:
Sheldon Cooper (Jim Parsons), The Big Bang Theory; Lisa Simpson (The Simpsons); Brainy Smurf.
Hope this helps!