And the best preparation for writing any story is to know with clarity what your protagonists’ worldview is, and more to the point, where and why it’s off base. Thus you have a clear view of the world as your protagonist sees it and insight into how she therefore interprets, and reacts to, everything that happens to her. It’s what allows you to construct a plot that forces her to reevaluate what she was so damn sure was true when the story began. That is what your story is really about, and what readers stay up long past their bedtime to find out.