The problem writing fiction is that to have any vitality, it is tapped into your unfiltered psyche. So as much as you separate your own beliefs and feelings from your characters’, things you make them say really do come from you, and sometimes this can bring things to light about you that you would not admit to or even realize were true, whether this is unlovely thoughts about your loved ones, or racial or other prejudices, or a strong conviction of despair, or any number of other things. All you can do is comb through in revision, doing your best not to comb out what is vital—which is also often what is the unsavory in you. No matter what we say about the work being separate from the author, we can’t pretend the actual human being who wrote the story isn’t implicated in it.