There are a lot of different character-building worksheets, both online and in how-to-write books, but one point most fail to mention is how to use the biographies you create.
Knowing your characters’ families, friends, education, jobs, hobbies, strengths, weaknesses, goals, regrets, fears, desires, needs, might help you define your characters, but the real benefit of character biographies is to help you create the story.
If it isn’t important for the reader to know, if nothing is gained by its inclusion, if nothing is lost by its omission, then that, too, is barely worth mentioning.
On the other hand, if your story goes stale halfway through the book, you can mine both the hero’s beliefs and background for additional conflicts.
More than that, though, a well-constructed character biography can tell you what your story is and where it is going.
When you know your hero’s main goal, you will find the beginning of a plotline. When you know what will make the goal’s attainment the most difficult for the hero, you will find the central obstacle in the story. And when you know your hero’s greatest strength, you can figure out how your hero will eventually overcome the obstacle.
By exploiting your character’s greatest fear, you will be able to draw the most depth from your character because, of course, your hero must confront this fear or else you miss the point of your own story.
Through knowing your character’s weaknesses, regrets, needs, desires, vulnerabilities, you will find inner conflicts, subtexts, subplots, and all the bits of drama that pull readers into your world.
As your story progresses, you may find in your hero’s biography untapped wells of strength, previously undisclosed facts that might alter the situation, even characters from the hero’s past who might take unexpected and relevant action.
Most of all, a biography can help keep you focused on your character’s goals. It can help you avoid annoying little inconsistencies such as hazel eyes on page ten and blue or brown on page one hundred and ten.
It can help you create a character arc because you will know which traits are static (an intelligent person doesn’t suddenly become stupid for no reason), and you will know which traits can show the character’s growth (perhaps a fear of commitment that becomes a willingness to commit).
But most of all, the biography tells you the story because the character is so entwined with the plot that it’s impossible to create one without the other.