This 45-year-old CEO interviewed more than 1,000 self-help experts — here’s the biggest lesson he learned

Since 2013, Vishen Lakhiani says he’s interviewed more than 1,000 self-help experts — and his most important takeaway has nothing to do with sleep habits or performance tricks.

Lakhiani, 45, is the founder and CEO of online learning platform Mindvalley , which offers masterclass programs and live interviews from leading health and wellness experts. Often, Lakhiani interviews his platform’s instructors — plus the occasional celebrity or entrepreneur, like billionaire Mark Cuban — to learn their insights on common self-help topics.

His biggest takeaway so far: Dedicate 20 minutes per day to your rate of self-evolution, or “the rate at which you are growing as a human being,” Lakhiani tells CNBC Make It.