As a storyteller, I did something I prefer to avoid in Inappropriate Conversations #79 by not finishing a story. That was partly about running short of time. Mainly, though, it was because the story took an abrupt turn as I realized something that stopped me in my tracks. I've heard this called "epiphany" in literary criticism, where the short stories of James Joyce provide excellent examples. It also happens in real life. I'm often amazed at how even a small and simple piece of information can change not only perspectives but the very direction of our life-stories.
Different Drummer: Paul McCrane