There was a time early on in his career when Novak Djokovic struggled in big-match moments, his body often letting him down when push came to shove. But the gluten-free Serb has been rock-solid ever since, a 10-time Grand Slam champion who today is perhaps the ATP World Tour’s most consistent performer.

His secret?

“There is not a single thing that I would point out as a secret of success,” said Djokovic in Beijing, where he’s set to face Nadal in the China Open final. “It’s just being able to generally take care of yourself and organize your schedule well so you can have that enduring success throughout the year.”

“I try to approach my career holistically and take care of my body, how much I train, how much I sleep, what kind of lifestyle I have,” he continued. “What I eat is also very important. Just trying to stay healthy in my mind and in my body.”

The World No. 1’s body-mind-and-soul mantra aside, it’s clear that husbandhood/fatherhood has brought the Serb a new sense of purpose, something that has paid dividends in both his personal and professional life. Of his son Stefan’s birth last October, Djokovic said, “When my boy arrived in this life, on this planet, it was completely a new dimension of experience for me and my wife. I’m still riding on the wave of that experience.”

“It has been the best thing that has ever happened in my life,” he added.

Djokovic’s form in Beijing this week has been nearly flawless. The five-time champion has dropped only 14 games through four matches, and is now a record 28-0 lifetime at the China Open.