 by pressing them instead of accepting their excuses. Because it's really human to want to make excuses when you screw up, when you're young and you haven't quite learned this yet. You think that if you admit that you screwed up that it's going to throw a shadow over your professionalism when actually the way that life works out is that people get to an age where they realize that everybody screws up at some point. It's not that you screwed up.