LeeAnn Willis Sims went from a size twenty-four to six and then back again - so she knows all about seeing life from varied perspectives. She's known the embarrassment of having to exit a roller coaster ride after the attendant couldn't buckle her into the seat. But she's also felt the glow that comes with exchanging a dress for the next size down. One thing she's learned: Insecurities don't magically slip away with the pounds, which is why it's important...