Losing your temper in public costs about a year of trust in about ten seconds.

Trust is built slowly because it is built out of many small consistent moments, and one loud moment can overwrite all of them, since people remember the outlier. It is not that anger is forbidden or that you have to be calm inside. It is that a public blow-up gives everyone new information about what you might do, and they adjust. That adjustment is the expensive part.

Learn the thirty seconds before yours: the heat, the certainty that you are right, the urge to say it now. Leave the room in those thirty seconds. Come back and say the same content in a lower voice.