Cool down before you make drastic edits to your book

Two nights ago, when I was writing, I had a bad realization. I realized that the theme of my book that I had taped to my monitor didn't fit, oh, the entire middle of the book.

I stressed.

I was about to take out the entire middle of the book.

Instead, I forced myself to walk away from the book for two days to let my brain mull it over.

Then I stopped and hammertimed and realized that when I looked at the whole, the middle absolutely belonged in what my vision of this book was. ...