In a few days, the nation's greatest athletes will come together to compete on the world's biggest stage. Years of sweat, tears, and grueling work can come down to mere seconds or fractions of a point. Sound like a bit of pressure? It's no wonder that being an Olympian goes way beyond physical strength and endurance. These athletes go for gold in resilience, perseverance, and dedication—training their minds to be at the top of their game. We took a look at how Olympians cultivate their mental fitness, and what you can learn from these world champs.