I think regardless of occupation, we all feel ashamed. As humans we often try to attach special meaning and significance to intensify an emotion... We'll think about friends or family and ask ourselves about the irony that we love them and yet we hurt them. You'll grasp onto the idea that you've dedicated your career to helping people and yet why haven't you helped yourself? Are you like a dentist with bad teeth?
The only thing to do is to try and get better. We're equal on those terms.