What did did hank criticize brain for the batboy mike lupica?

In "Batboy" by Mike Lupica, Hank criticizes Brain for being overly cautious and not fully embracing his talent and potential as a player. He believes that Brain's fear of failure is holding him back from truly Excelling in Baseball. Hank encourages Brain to take risks and have confidence in his abilities, emphasizing that playing with heart is essential to success.