Mental toughness is leaving it all on the field, because anything else is less than you owe yourself and your team for all the work you put into being there to start with.
Well meaning motivational types will tell you to “Go big or go home!” Sometimes going home means you went big and made it out the other side – which shows a lot more mental preparedness than simply going big.
Unless you’re gambling and have something to lose, don’t quit while you’re ahead. Keep pushing, don’t let off the gas until the final whistle blows.
When things are going against you, don’t lose your focus. The biggest mind game you have to win is the one against yourself.
Nothing will fix performance anxiety, but you can work to keep things in perspective.
Ultimately the important thing is to learn to accept mistakes, even the big ones, as part of life.