Leave one question unanswered tonight

You have considered the options, sent the question, and checked the details available to you. What remains depends on someone else’s response. Still, you keep reopening the problem.

Write three brief lines: what you know, what you are waiting for, and what you will do when it arrives. If there is a genuine action left, include it rather than pretending it can wait.

No amount of rearranging the existing facts can produce tomorrow’s reply. You can dislike that limit without needing to argue with it until bedtime.

Choose something with a clear beginning: wash the dishes, read a few pages, or talk about another subject. It does not have to remove the uncertainty to deserve your attention.

Keep the note where you can find it. Tomorrow you can continue from the actual situation, rather than from the fear that pausing meant you had stopped caring about the outcome.