Have you ever thought about who you really are? What makes you special? Are you friendly and outgoing? Do you have annoying habits? Are you a "character"? How are your parents and siblings different from you? Or, are all of your family members kind of alike?You might be surprised to hear that many researchers have tried to classify people's personalities into categories-archetypes. But many archetype theories have come and gone because true attempts at classification are tricky: categories are not based on natural laws and they are not self-confirming-or are they?