How the Giants helped John Harbaugh rediscover his coaching mojo

Heard that one before. Yup, that one, too. That heavy dose of optimism and positivity. The demanding physical rigors of his practices. The homespun anecdotes and historical quotes — Winston Churchill is a particular favorite. Check, check, check. It turned into been-there, done-that for John Harbaugh and the Ravens because it had to. There was…