I had this idea for a character who rearranges reality based on emotions of the moment. As if I need more ideas for things to write, still, I got all happy and excited before realizing James Thurber beat me to it by probably around 65 years. I cannot write The Secret Life of Walter Mitty. But Thurber felt much of what he wanted to write had been written better by Robert Benchley many decades before Thurber thought of it.
The upshot of which is that I want to spend the rest of the night reading Benchley and Thurber.