Failure is Inevitable.

Learn how to deal with and accept that you will fail more than you succeed. The great ones realize this and plan on how they will react when they inevitably fail. When you fail act like you did it on purpose. It's not your helmets fault and its a joke when players act like babies when they fail. If you are able to improve your ability to deal with failure and learn from your mistakes you will evolve into a drastically better baseball player because baseball is 99% mental.