Roommates teach you more about yourself than any personality quiz: what you notice, what you let slide, what you can’t.

Living with people shows you your own edges in a way nothing else does. You find out what you actually notice, what you can let go, and the one or two things you cannot be reasonable about however hard you try. None of that is visible when you live alone or at home with people who learned to work around you years ago.

Pick the thing you have discovered you cannot let slide and say it once, plainly and early. Then pick something you have been irritated by and genuinely let it go. Knowing which is which is most of living well with anybody.