And in situations where a man and a woman each receive negative feedback, the woman's self-confidence and self-esteem drop to a much greater degree. The internalization of failure and the insecurity it breeds hurt future performance, so this pattern has serious long-term consequences.

In fact, my New Year's resolution every year, and I'm Jewish so I get two New Years a year, is to meditate, and I fail every time.

Careers are a jungle gym, not a ladder.

What works for men does not always work for women, because success and likability are positively correlated for men and negatively correlated for women. That's what the research shows. As a man gets more successful, everyone is rooting for him. As a woman gets more successful, both men and women like her less.

I don't pretend there aren't biological differences, but I don't believe the desire for leadership is hardwired biology, not the desire to win or excel. I believe that it's socialization, that we're socializing our daughters to nurture and our boys to lead.

When companies offer support and assistance for personal and family hardships, their employees become more loyal and more productive.

The most important career decision you'll make is who your life partner is.