If you knew the exact number of sunsets left, ordinary evenings would become sacred.

A known limit changes how anything is treated. If you knew the count of ordinary evenings remaining, you would attend to them differently, not because they changed but because the scarcity became visible. The scarcity is already real; only the number is hidden. That is the entire difference between how you treat tonight and how you would treat it.

Without being grim about it, try treating one ordinary evening this week as though it were countable. Put the phone somewhere else and be present in it. The practice is quiet and it changes the texture of a life more than most larger decisions.