In his fourth book, Newport defines deep work as the capacity for intense focus free of all distractions. In the first part of this book, Newport defines the concept of deep work and its value to one's personal life and professional career. Newport also argues that deep work is applicable to almost anyone, in any line of work because it is more about resolve and commitment. In the latter part of the book, Newport reveals the set of rules one has to follow to successfully transition from a fruitless, superficial life to one full of depth and meaning.