One thing your hero will never do
One of the great challenges writers face is letting go. When you create a new character, you try to make it unique. Colorful. Realistic. And as different from yourself as possible. Otherwise, it just becomes a self-therapy for your alter ego, and your characters all look and behave a very bland and boring same. The farther you go, the more freedom you have. Then, you face a moral question. What is the one thing you will never ever let your hero do?