It has happened to me several times—I was in the middle of nowhere, and had mentally written a wonderful chapter of my book with an epic start and a mind-blowing end, to be written in the computer “tomorrow”—the tomorrow came, the chapter didn’t!
Gentle reminder that ideas and thoughts are things, especially the ideas for your creativity.
Capture them the moment they knock. On a paper. In a notebook. On a paper napkin. Messaging yourself. Okay, a voice note too.
If you don’t entertain them, they’d evaporate.