Threes create perfect representations out of themselves in the eyes of others in order to deal with fears of abandonment that they aren't aware of. In this way, Threes come to symbolize the social ideal in whatever field of accomplishment interests them.
Twos and Fours deal with abandonment fears in a different way.
"I absorb energy like a sponge everywhere I go. It allows me to see the world and my purpose in it." Zak Bagans, Ghost Adventures (INFJ)