Let people offer a quiet congratulations without measuring their affection by volume.

Not everyone celebrates loudly, and the quiet ones are often not less glad. A short message or a hand on the shoulder can carry as much warmth as a party, though it does not announce itself, and judging people by the size of their reaction will make you suspicious of some of your steadiest friends. Some affection is simply pitched low.

When good news comes, notice who turned up in small ways rather than counting who made a fuss. Thank the quiet one directly so they know it landed. And when you are the quiet one, let your brief note go without apologizing for its size.