INTJ self reliance and confidence necessary for taking deliberate action on their ideas but these same traits can make them seem aloof and unapproachable. Love them for the positive energy that makes them shine.
the more the merrier? So if one was having a party in one's home with guests, and one abided by this saying, people would keep coming in. More and more guests. Therefore, eventually, it would not be merry- everyone would be suffocating.