It’s always tempting to think that when you have more power — maybe even just a little more – it will be easier to call out wrongdoing. But over the last two years, as we interviewed over 60 business leaders, what we found is that this feeling never goes away. There is always someone or something more powerful than you are — when we spoke with company CEOs, they’d express concern about their boards, and when we spoke with board chairmen, they’d admit to being afraid of the media.

This quiz puts you in Oprah Winfrey's place during some of her most pivotal decision-making moments, which ultimately led her to become the first African-American female billionaire. Test your business acumen to see if you would make the same strategic calls as she did.

While some people are early birds and others are night owls, one thing many people have in common is a feeling of sluggishness in the afternoon. This is in large part due to your circadian rhythm, a roughly 24-hour "master clock" that regulates hormones in your brain -- including, most prominently, the ones that make you feel tired or awake. But you don't just experience a physical lack of energy.

Over the years there have been many attempts to use chess as metaphor to describe a number of different realities. Business is one of those realities finding a connection to the dynamics of chess given the use of strategy and tactics. However, what I find more often than not are metaphors clumsily assembled or force-fit into business cases. The result is a mish-mash of facts that are confusing EXCEPT for the most astute of readers.