The second half of the book outlines the practice of ACT and as such illustrates the fist part. This sections is excellent in that even thought it uses language to describe ACT, it attempts to use the principles of ACT upon the reader and gives the reader examples to work though at the end of each chapter. Thus, the reader cannot emerge at the end of the book without having been changed by reading the book.
The ability to critique current thinking in clinical psychology is not novel, but the ability to present an alternative is much more rare. Hayes and colleages have done so and have presented it in a way that will be accessible to practitioners and researchers from many different theoretical orientations. A challenging and thought-provoking book.