First, do no harm. As doctors, we pledge to live by this oath. But harm happens and then guilt happens. And there is no oath for how to deal with that. Guilt never goes anywhere on its own, it brings its friends - doubt and insecurity. We are left with a choice. Either let the guilt throw you back into the behavior that got you into trouble in the first place, or learn from the guilt and do your best to move on.
- Grey's Anatomy