Comic Relief: Writing is all about balance. You need to bring the tension up and release it with relaxation or humour. Give the reader a break so he can keep reading without forcing a break by putting the book down.
The archetype is the foundation of a character. He is the groundwork onto which the writer builds layers of personality.
The Archetypes According to Carl Jung
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.
The following 10 personality types stem from so called CMO personality types. CMO stands for chief marketing officer. These personality types are often found in business.
Eight different geek personality types!
Ten social personality types in the media
Six personality types at work