We have all been there. You have a main character and a plot perfectly crafted and organized. You sit down to write your initial draft, and you realize your main character needs to have friends, mentors, family, and enemies with well-crafted personalities that leap from the page. You want to stay away from developing a flat character, but how do you do this quickly and efficiently, so you can get back to writing?
The answer to this scenario is to use Myers-Briggs personality types.