Mental toughness is a state of mind - you could call it 'character in action.'
Inches make champions.
They call it coaching but it is teaching. You do not just tell them...you show them the reasons.
The good Lord gave you a body that can stand most anything. It's your mind you have to convince.
If winning isn't everything, why do they keep score?
If it doesn't matter who wins or loses, then why do they keep score?