November 26, 2013 - Sheryl Sandberg's book, "Lean In: Women, Work, and the Will to Lead," generated a lot of buzz and conversation this year, both positive and negative. If there's one thing that isn't in short supply, it's advice. Women are told to lean in, speak up (but not too much), turn around (but don't drown!), wait, don't wait (but definitely don't wait too long). It's like leadership aerobics.