I was maybe 10 years old complaining to my dad about how the rest of the kids on the soccer team fucking sucked and couldn't do shit on offense. All they could do was watch me play up front against the entire other team while they all hung back waiting for me to get a goal.

My dad shut me down immediately. Violently he turned to me and said don't you ever let me hear you complain about your teammates again.

I quit team sports after that. Briefly re-entering only when required by a boarding school, and then only briefly before it was back to solo pursuits.

He never heard me complain about my teammates again.