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The Olympic gold medalist in diving talks about his early training, why he mentors rather than coaches other divers, finally winning a place on the Wheaties box, and more.

Yolk-ay, a United Arab Emirates restaurant chain specializing in traditional Indian egg dishes, recently opened its eighth location in 10 years--but turnover is flat, and competitors are gaining market share. Should Yolk-ay go after new customers by adding vegetarian and chicken dishes to the menu? Or stick to what it's known for rather than risk diluting its brand identity? The chain's father-son owners are on opposite sides of the issue. This case includes expert commentary from Rajiv Meherish, the founder of the Dubai-based restaurant group Raju Omlet, and Anthony Ackil, a cofounder of the U.S. fast-casual chain b.good.

The renowned cellist on collaboration, risk taking, and childhood fame.

Yolk-ay, a United Arab Emirates restaurant chain specializing in traditional Indian egg dishes, recently opened its eighth location in 10 years--but turnover is flat, and competitors are gaining market share. Should Yolk-ay go after new customers by adding vegetarian and chicken dishes to the menu? Or stick to what it's known for rather than risk diluting its brand identity? The chain's father-son owners are on opposite sides of the issue. This case includes expert commentary from Rajiv Meherish, the founder of the Dubai-based restaurant group Raju Omlet, and Anthony Ackil, a cofounder of the U.S. fast-casual chain b.good.

Yolk-ay, a United Arab Emirates restaurant chain specializing in traditional Indian egg dishes, recently opened its eighth location in 10 years--but turnover is flat, and competitors are gaining market share. Should Yolk-ay go after new customers by adding vegetarian and chicken dishes to the menu? Or stick to what it's known for rather than risk diluting its brand identity? The chain's father-son owners are on opposite sides of the issue. This case includes expert commentary from Rajiv Meherish, the founder of the Dubai-based restaurant group Raju Omlet, and Anthony Ackil, a cofounder of the U.S. fast-casual chain b.good.

The best-selling author of "The House of the Spirits" discusses the role of discipline in her writing process, her long-held determination to work, and her belief that every book is an offering--"You just put it on the table and see who will accept it."

The celebrity sex therapist of the 1980s discusses transitioning to a public career, adapting to many different cultures, and "rewiring" rather than retiring.

The actor, producer, and director on moving from stage to screen twice over.

The astrophysicist on balancing his TV career with his day job and why no one could dissuade him from a career in science.

Do daughters influence the business decisions of S&P 500 leaders? New research suggests that the answer is yes.

Bill T. Jones revolutionized modern dance through the company he founded in 1982 with his partner Arnie Zane, who later died of AIDS-related lymphoma. He's since choreographed over 120 works (including the Broadway hit "Fela!"). Now 63 and the artistic director of New York Live Arts, he returns to the stage for a solo performance this season.

The tennis star talks about his legendary comeback, managing his emotions on the court, and what makes a great coach.

The acclaimed novelist discusses his creative process, the appeal of social media, and the unique truths found in fiction.

A survey of five books investigates the seemingly universal insistence on feeling good.

Though the Apple logo is ubiquitous, 99 out of 100 people can't draw it from memory. The reason? Our brains don't burden us with information we don't think we'll need.

The politician and peace negotiator on starting a dialogue, getting people to listen, and the importance of public service.

The Oscar-winning producer of "Splash" and "Apollo 13" on curiosity, delegation, and rising to the top.

In this edited interview with HBR senior editor Alison Beard, the chess player and Soviet exile discusses strategy, power, and the importance of playing your own game.

The actor, producer, director, and mother talks about adjusting to fame at a young age, developing rapport with other actors, how her industry has changed, and the foundation she has established to teach resilience and mindfulness to children.

London mayor Boris Johnson has been a magazine editor and a shadow cabinet minister for the UK's Conservative Party; he is also the author of several books. In this edited interview he discusses work-life balance, influence, and ambition.