It Really Doesn’t Take That Much
It’s a simple thing, not necessarily a big thing but it goes a long way to making life (more) harmonious.
Leave things the way you found it- if not infinitesimally neater/cleaner/better….
You spill a little coffee with your first cup of the day because you are still half asleep. Wipe up your mess and the coffee ring the person before you left.
Put your mug/fork/plate/spoon in the dishwasher- and the bowl that some schmuck left in the sink.
It is that easy.