A fantastic book. Simply but clearly goes into the basic facts around sleep and energy, debunking a lot of the fear-based stuff we often hear about sleep, and offering real, tangible and practical ways to unwind and sleep better. I also personally loved the mixing of western science with eastern practices, and anyone reading could pick and choose whatever resonated for them, so there's no need to do every technique in the book (and there are many) outside of her five 'non-negotiables' in the first part of the book. As a physiologist, the author looks at things from a holistic viewpoint, so stress, beliefs, and lifestyle are also explored, and I loved this approach. This is also the first thing on sleep/energy I've found which actually identifies the over-stimulated and over-stressed state that can lead to sleep issues, and responds by instilling encouragement and calm, rather than an analytical/obsessively measuring approach which can just increase the over-stimulated, over-thinking response.