For bestselling author and researcher Brené Brown, entrepreneurs who shy away from vulnerability lack a crucial leadership requirement.

While business owners don't typically present themselves as outwardly vulnerable people, the best entrepreneurs all embrace the concept in one way or another, according to Brown.

"You wouldn't stand up in front of a group of people who work for you--or who have funded you--and say, 'I'm scared to death, I'm in over my head and I don't know what I'm doing,' but you would need to be saying that to someone," Brown says. "Every leader that I found who was managing successfully and leading successfully shared in common a mentor or peer groups where they could say, 'I'm in over my head' or 'God, I'm scared with what's going on with the economy right now.'"

Another concept Brown associates with entrepreneurship is the idea of being uncomfortable, because being an innovator requires working through a significant amount of uncertainty and risk.

"If you choose to be courageous,then you have to let go of the need for comfort, because you can choose courage or you can choose comfort, but you cannot have both," she says.

"For entrepreneurs, one of the things I would say is, create a culture where discomfort is normal. Create a culture where people understand that if you are uncomfortable, that means you are doing what we need you to be doing."

To hear more about why entrepreneurs shouldn't hide their vulnerability, watch the video below.