Being authentic doesn't mean being chipper, etc. Maybe I misunderstood. If I went to work 'authentic' within the first hour I would have a dozen inquiries of 'what's wrong?' If I answered truthfully "I'm depressed and anxious,' I would be seen as weak, vulnerable, unreliable, and unapproachable. It would not work for my bosses or the board or fellow managers. No, best to fake it as best I can.