Think of the last time you really blew something. Was it a meeting, an interview, a test or a date? Did the setback stop you in your tracks — or did it give you the push you needed to move forward? Because, when it comes to long-term success (however you choose to define it), how you fail is more important than the failure itself. This week, author and educator Rachel Simmons gives us a private lesson on failing well (adapted from her popular course at Smith College). We also touch on the culture of mean girls and why it’s important to surround yourself with women who help you shine. In Mailbag, we tackle your questions on investing in a long-running bull market and 529s before kids. Join us!