Why business is like baseball, according to this Japanese CEO

When it comes to sports, practice makes perfect is the golden rule.

Yoshitake Saito, president and CEO of Evident Corp., said the same is true of business too. In fact, he said that people should train themselves like baseball players.

"How much time do they spend for the sport and the game? Only 20%," Saito told CNBC's My Biggest Lessons.

"The rest of the other 80%, they are self-training by themselves," Saito explained. "This is similar for us, as professionals, as employees."

"We need to self-invest much more," he said.

Saito said that's one of the most important lessons he has learned. And if Japan's third title at the World Baseball Classic is anything to go by, the strategy is certainly effective.

This is just one of Yoshitake Saito's five biggest lessons. Watch the video above for more.