25 letzte Sommer by Stephan Schäfer

The protagonist lives a stressful live with endless to-dos and little time away from screens. He mets Karl, a potato farmer who lives a simple, happy life. They talk about big questions–how many summers do you have left and how are you spending them? What are questions you wish you would’ve asked your parents? How can you achieve your dreams?

It’s a short book and while it becomes fairly predictable, it does a good job in challenging you to think about the same questions.