The athletes improving the fastest aren't always the most talented. They're the ones collecting information. A bad tournament gives them information. A great training session gives them information. A terrible night's sleep gives them information. An injury, setback, or plateau gives them information. The problem is most people only like information when it confirms what they already believe. What's one piece of feedback, data, or experience you've gotten recently that you didn't want to hear... but probably needed to hear?