It takes a certain amount of narcissism to claw your way up the ranks of a company. But it takes as much humility to be successful once you’re there.

Executives who curb their confidence in their vision by admitting mistakes and limitations and acknowledging the contributions of others tend to command the most respect and loyalty from their teams, who thereby deliver results, according to a new study from Brigham Young University’s Marriott School of Management. However, humility, like meditation or golf, may take some practice.

And even so, narcissism is often a necessary tool for success -- as it was for the late Apple co-founder Steve Jobs, whose obsessive commitment to his vision for the iPhone maker helped shape it into the world's most valuable company.

“Humility is not meant to replace some of the quintessential aspects of leaders,” Bradley P. Owens, assistant professor of business ethics at the university, told The Huffington Post. “It’s meant to supplement and buffer them from the extremes of narcissism.”

The study surveyed 876 employees at a large Fortune 100 health insurance company and asked them to rate 138 leaders in the company on their humility and effectiveness, and how motivated the employees were by their supervisors.

Researchers measured the narcissism of the leaders by asking them to describe themselves by choosing between statements such as “I am an extraordinary person,” or “I am much like everybody else.”

“The leaders that performed the best were those who had high narcissism and high humility.” Owens said.