Print When it comes to training in the higher-level competitive gymnastics that Victor Joulin-Batejat has reached, the hardest part isn’t developing tremendous physical strength or committing to hours of practice. It’s building mental strength. “It takes a lot of time to build that confidence,” said Victor, 14, a freshman at The Bishop’s School in La Jolla. “The physical training is just like any other sport. We do drills for the skills, and the strength training. There is a lot of buildup; our coaches don’t just throw us in the deep end. But every time, it just comes down to ta...