Skipping the party to finish the application is a trade, not a sacrifice. You picked what mattered.

Calling it a sacrifice makes it sound like you lost something and got nothing. What actually happened is that two things wanted the same evening and you picked, which is what every full week is made of. There was never a version where you got both, and treating your own choice as a theft from yourself is a reliable way to resent the thing you chose.

When you stay in, name what you are choosing rather than what you are missing. Finish the thing, then plan the next night out on purpose. Deciding twice beats drifting through both.