Overview
If people around you overreact to an unpleasant situation today, do not follow their example -- no matter how justified they may be. Screaming at someone who has been rude or inconsiderate isn't going to mitigate the stress; it will only increase the tension. Be mindful of your role in every conversation, and try to be a force for mutual respect. You will have to take the high road today. There will soon be a day for you to get some things off your chest.
