Practice being happy. Work at it. It's a new role, I realize, but you'll get it. The auditions will be coming up very soon. So get on top of it. I'm sure you will get the part.
Freud's theory was that when a joke opens a window and all those bats and bogeymen fly out, you get a marvellous feeling of relief and elation. The trouble with Freud is that he never had to play the old Glasgow Empire on a Saturday night after Rangers and Celtic had both lost.