Here’s another question for you to consider while you develop your characters for this year’s NaNo:
How does the internal goal of your character conflict with their outer goal. That conflict and how your character overcomes either a fear or a hidden flaw allows for character growth (arc), during your novel. For example, for my character, the internal conflict could be that they hide the fact that they are socially awkward/painfully shy behind an aloof exterior. During the story, they wind up having to become the voice or advocate for a group of people treated as nothing more than curios.