A compliment you keep to yourself expires. Say it while it can still make their day.

Good thoughts about people stay unsaid because saying them feels slightly exposing, or because no natural opening appears. Meanwhile the person you are thinking well of is often somewhere doubting the exact thing you admire. An unspoken compliment helps nobody; it is a gift left in the drawer until the occasion for it has gone.

Send one today, plainly, with no build-up and nothing asked for in return. Be specific about what you noticed, because specific is what people believe. It will take you a few seconds and they may carry it for a week.