There is a talk by an actor (IIRC) who worked as a football (soccer) referee, to learn not to take things personally: https://www.youtube.com/watch?v=LnJwH_PZXn

There is a talk by an actor (IIRC) who worked as a football (soccer) referee, to learn not to take things personally: https://www.youtube.com/watch?v=LnJwH_PZXnM https://www.youtube.com/watch?v=LnJwH_PZXnM