Fear is at the root of so many of the barriers that women face. Fear of not being liked. Fear of making the wrong choice. Fear of drawing negative attention. Fear of overreaching. Fear of being judged. Fear of failure. And the holy trinity of fear: the fear of being a bad mother/wife/daughter.

Women systematically underestimate their own abilities.

I hope you find true meaning, contentment, and passion in your life. I hope you navigate the difficult times and come out with greater strength and resolve. I hope you find whatever balance you seek with your eyes wide open. And I hope that you - yes, you - have the ambition to lean in to your career and run the world. Because the world needs you to change it.

If I had to embrace a definition of success, it would be that success is making the best choices we can ... and accepting them.

Speak up. Believe in yourself. Take risks.

Every woman I know, particularly the senior ones, has been called too aggressive at work. We know in gender blind studies that men are more aggressive in their offices than women. We know that. Yet we're busy telling all the women that they're too aggressive. That's the issue.

Success and likeability are positively correlated for men and negatively for women. When a man is successful, he is liked by both men and women. When a woman is successful, people of both genders like her less.