Many of us have been told that "being true to ourselves" is a key to success. But in the workplace, being "authentic" might actually wreak havoc. "The more one looks at the notion of authenticity, the more one realizes, or the more I realize, it's a crock and it's nonsense, and it's more likely to be self-destructive than value-added," says Michael Schrage, contributor to the Harvard Business Review and a research fellow at MIT Sloan School. So if you shouldn't be your utterly unfettered authentic self, what should you be then?