For writers, the Enneagram is a useful tool to character development, especially in conjunction with dialogue to reveal the characters in the story. It is a study of nine basic types of people, explaining why they do what they do and shows the direction for individual growth. In real life, it can be used to improve relationships with family friends and so on. The roots of the Enneagram go back many centuries. Its exact origin is not known, but it is believed to have been taught in secret Sufi brotherhoods in the Middle East.