Personalities & Application Personality knowledge is not a weapon but a tool.  In this context, the difference between a weapon and a tool is that one is used to harm while the other is used to help.  If you are familiar with the four personality types [Popular (Playful) Sanguine, Perfect (Proper) Melancholy, Powerful Choleric and Peaceful Phlegmatic] and have a decent grasp on the basic characteristics, strengths, weaknesses and emotional needs of each, then undoubtedly you have been in many…