Calling all nice girls — yes, you! We’re diving into the conflicted relationship women have with being nice — especially in the workplace — with the ultimate nice girl (and our new girl crush), Fran Hauser. She’s out with her first book, “The Myth of the Nice Girl: Achieving a Career You Love Without Becoming a Person You Hate.” It’s important, because it’s a fine line to walk. When you’re nice, you can be seen as weak or ineffective. When you’re assertive, you’re bitchy. It sounds like a lose-lose, but Fran says it doesn’t have to be. She’s proof that you can be nice and successful simultaneously and she’s here to teach us how. In Mailbag, Kelly and I cover your questions on Roth IRAs for teens, umbrella life insurance policies for families and why you don’t touch a 401(k) before retirement. In Thrive, we talk about price protection on credit cards. Is this benefit soon to be a perk of the past? We discuss.