Tired and sad feel similar to me. Not identical, but close enough that without obvious context I might not know what’s going on.

When I am alert enough to prevent myself from prescribing meaning or context to a given feeling I have a better chance of redirecting the momentum towards action that will actually fix whatever is going on, be it sleep or sadness.

Feel and move on. Meaning isn’t necessary. Don’t go hunting for context if it isn’t already obvious.

1/640sec @F/5.6 with 90mm ISO400