The longer you live, the more likely you are to get cancer. Therefore, party hard and burn out young. Wait, no, that’s not the lesson: therefore, you should all learn about cancer, and a good starting point is The Emperor of All Maladies: A Biography of Cancer. I’ve recommended it before, and I’ve used it as assigned reading in a biology of cancer course, so you know I think highly of it.
But, you say, it’s so long. It is a rather substantial text. But there is going to be an alternative.