Guest Post by Laura Ries (learn more about Laura at the end of this article): Talk about "having it all." How about the 37-year-old woman, pregnant with her first child, named the new CEO of a $5 billion company that last year had net profits of $1 billion. With Marissa Mayer's Yahoo appointment, there are now 20 female CEOs of Fortune 500 companies. So how do you … [Read more...]