The same day I joined the motherhood clan, roughly 360,000 other women around the world also gave birth.1

Maybe you’re a new mother. Or expecting to be one soon. It’s also possible you’re reading this book while your twelve-year-old does homework, your teenager practices on his drum set in the basement, or you’ve just gotten off a call to your kid at college. No matter . . . I’ve written this book for us all.

Today is probably the best time ever to be a woman. We women can run anything: marathons, households, businesses, and countries. We can communicate at lightning speed, and our voices are finally being heard within our culture, shaping its future. Twenty-first-century ladies are not to be messed with . . .