Sheryl Sandberg wrote a book, Lean In: Women, Work, and the Will to Lead.

Nicholas Carlson summarizes her book's stats:

Women are 57% of college graduates and 63% of masters degree holders, but that majority fades as careers progress.

21 of the Fortune 500 CEOs are women.

Women hold 14% of executive officer positions.

Women hold 16% of board seats.

Congress is 18% female.

In 1970, women were paid 59 cents for every dollar men made. Now it's 77 cents.

A McKinsey study says men are promoted based on potential, while women are promoted on accomplishments.

In a survey of 4000 employees at big companies, 36% of men said they want to be CEO. Only 18% of women said the same.

More male college students say they want to "reach managerial level" three years after school than females.

Women are much less likely to say they want to be president.

Successful women are more likely to feel like "impostors".

Despite outperforming men, female surgical students give themselves lower grades.

Girls perform worse on tests when they have to check off M or F before taking it.

Men attribute their success to innate qualities and skills. Women attribute their success to luck and help from others.

When men fail, they say it's because they weren't interested. Women blame their lack of ability.

Men are 60% more likely to think of themselves as "very qualified" to run for office.

Sheryl's solution: Sharing financial and childcare responsibilities with a husband makes for less guilty moms, more involved dads, and "thriving" children.