The one mental skill that separates college players from high school players
Played college ball and the biggest adjustment wasn't physical — it was mental. The guys who lasted learned how to move on from mistakes faster than anyone else. A bad at-bat in the first inning had zero carry over to the second. A bad game had zero carry over to the next day.
Most high school players carry mistakes with them the entire game. College players learn to let it go almost immediately. That skill is trainable but nobody explicitly teaches it.
What do you think the biggest mental adjustment is going from high school to college ball?