If your life was a book, and the last page contained the lesson to be learned, what would it say?

No context needed. Just the moral of the story. In my case it is: [No good deed goes unpunished](https://www.youtube.com/watch?v=PFsJwNg4-Uk) That's been a reoccurring theme in my time. A lesson that the universe insists that I learn. But I'm a slow learner.