Full Disclosure: Book was won through First Reads Giveaways.
This book is very readable and accessible. The writing is formatted so that you can quickly read each section. It is also handy if you need to quickly refer back to a particular section. This is by no means comprehensive but more of a kickstart self-help book. The philosophy and main focus is mediation and mindfulness while describing everything in layman's terms as well as applied to everyday scenarios.
If you are not receptive to the concept, then this book will not be helpful to you. However, if you are looking for a starting point to calm your self-doubt and criticism through mediative methods, this might be a good start for you.