Some people believe that by revealing your specific personality type, enneagram personality types can help you gain a better understanding of yourself. Psychologists such as Carl Jung have long studied personality types and identity archetypes, and corporations even use personality tests like the Myers-Briggs Type Indicator as a means of identifying applicants' and employees' probable strengths and weaknesses.
While it's hard for us to generally identify our own specific personality traits and faults with much accuracy, those around us have a much easier time pegging us for what and who we are [source: Washington University in St. Louis]. This blindness to oneself can lead to a worsening of negative traits that have gone unchecked, or a lack of confidence in one's positive traits. Using the enneagram personality types might enable a person to spot his or her type through either the identification of positive or negative traits. The person might also be able to identify corresponding traits for that type that may have gone previously ignored or unacknowledged.
Studies have shown that we alter our perceptions of physical attractiveness once we learn more about a person's personality -- positive personality traits like helpfulness make people more attractive to others, while negative personality traits like selfishness or pettiness make others lower their perception of how physically attractive that person is [source: Blackwell Publishing]. Your personality even plays a role in the likelihood of having children. Those who are more aggressive and show leadership skills (such as the Reformer, the Challenger and the High Achiever) tend to be more successful in their quests for producing offspring [source: Wiley-Blackwell].
What's the bottom line? Learning more about your personality type may help you to be more self-aware -- and make your interactions with other people a little smoother.