The title of the book was what triggered my curiosity and as the title of the English translation, it is clear that this book had a good marketing team. The book wasn’t bad, the information about the title’s topic was very kept to a minimum. Some blog posts have written a more concise and extensive overview on the topic. However, a little repetition never hurts and there were a lot of things I had changed over last two years that made me feel good about my choices and the path I am on. Furthermore, the biggest lesson for me was that being optimistic has a significant impact on one’s life expectancy — extend it up to seven years — compared to more pessimistic people. Being aware that correlation is not causation, there is still a lot of merit to this observation and something I would want to work on the coming years if not decades. As a sidenote, this was the first book in which I extensively used the note-taking feature on my e‑reader to help me improve my vocabulary and highlight the sentences that resonate with me and that I would like to use in the summary. However, I find that many of these are in Dutch and not all of them would work well after translation. So for now, I’ll leave it at this and in the future I hope to extend this review with those lessons, after I figure out how to export them to a more manageable format instead of having to type it word for word. Even though the latter seems better for retention of the information, I think I would be less likely to do it for most of the books I read.