Australian Open Novak Djokovic faced Roger Federer in the semi-finals. They had previously met 44 times and split the victories right down the middle. Who got the win? Novak. Here’s what he said after the match, “It’s important at the end of the day that your convictions are stronger than your doubts.” What that quote says to me is that Novak is mentally tough. To be at the top of your game you can’t be squishy mentally. You need to be tough enough to keep fighting through challenging situations and moments of doubt. You can read about the match here. In this book on mental toughness by Steve Siebold he shares 177 secrets of world class thinkers who are mentally tough. I consider Steve a mentor and an excellent resource. Secret #7: The Great Ones Know They Are Unaware. While average people seek mental comfort, the world class believes mental comfort is the death of growth. They live by this phrase: “You’re either growing or dying; stagnation does not exist in the universe.” I agree.