Former Tesla president reveals the ‘single most important thing’ you can do for your career—it’s a habit Elon Musk and Warren Buffett share too 

Jon McNeill has had a front-row seat to how the world’s most successful leaders operate. As former president of Tesla—reporting directly to Elon Musk—and later COO of Lyft, he’s spent years working alongside top executives.

Across those experiences, he’s noticed one habit that consistently sets high performers apart, yet seems to be fading with younger professionals: reading books.

“Reading is probably the single most important thing you can do,” McNeill told Fortune. “Over time...