When a moment’s really good, say it out loud: “This is good.” It helps you actually remember it.

Naming something while it is happening pins it in place. Saying it aloud makes your attention land properly, and attention is what gets stored, which is why unmarked good evenings blur into each other. It also gives everybody else permission to admit they are enjoying themselves.

The next time an ordinary evening is going well, mention it to the people in the room. The mild awkwardness lasts two seconds and the memory lasts much longer.