In this, the Second Edition, Dr. Holbrook has added new chapters on tactical teams and police officer's wives, and he expanded existing chapters. This is a self-help book intended for police officers and their families but the material is applicable to all first-responders, servicemen and women, and veterans. The book is a practical guide for anyone who wants to improve their life by living better and improving their sleep. The author, Mark Holbrook has a Ph.D. in clinical psychology and he is in private practice in Maine. He works primarily with police officers, active duty military personnel and their families.