Reading this book over my summer break really drilled the importance of sleep home for me. I was chronically sleep deprived, working on personal projects late into the night after work. After reading this book I realized I was doing myself more harm than good. I was on a five-week holiday at the time, which was the perfect opportunity to start following a more strict sleep schedule. I've slipped a little bit since going back to work, but still manage to get between 7-8 hours per night now and feel better for it.