36+ Mental Toughness Quotes Sports. Here are 3 strategies to help you build mental toughness and conquer any challenge, test, or goal. 14 years later, it s. It's not as easy to just be tougher, though. Mental toughness is the ability to perform at a high level when the stakes are at their highest. And four things they do to make themselves even tougher. These quotes will help you keep pursuing your goals. It was the difference between staying in corporate america or venturing out on my own. We may earn a commission through links. Last updated on february 22, 2021 heather shares about everyday lifestyle tips on lifehack. Mental toughness is a huge indicator of success.