But what if I make a mistake?’ Will asked.Gilan threw back his head and laughed. ‘A mistake? One mistake? You should be so lucky. You’ll make dozens! I made four or five on my first day alone! Of course you’ll make mistakes. Just don’t make any of them twice. If you do mess things up, don’t try to hide it. Don’t try to rationalize it. Recognize it and admit it and learn from it. We never stop learning, none of us.
John Flanagan, Erak’s Ransom