Appreciation is a skill because familiarity naturally dulls wonder.

Wonder fades automatically because your nervous system is built to stop reporting anything constant. That is not a moral failure, it is efficient perception. But it means appreciation cannot be a feeling you wait for, it has to be a practice that works against the natural drift toward not seeing.

Treat it as a skill with reps. Once a day, take one familiar thing and look at it long enough for it to become strange again. It gets easier, and it slowly changes how much of your life you actually experience.