You know the old saying, "... what are friends for?" We'd like to think we're there to help our pals pick up the pieces when life doesn't go according to plan, and vice versa. Although sometimes, it's hard to know where to start or what to say. Short of possessing a magic wand or rewind button, it's easy to feel helpless. So, we've rounded up the experts to help you help them when life becomes a downer.