I found it a very worthwhile read. I found it to be a novel mixture of thinking about affects, psychoanalytical theory, child developmental theory, clinical psychology, psychopathology and neuroscience. I learned loads of interesting stuff and enjoyed the challenge of absorbing new insights combining these fields. Chapter 2 was a superb summary on the history of thought on affects, firstly in philosophy and later on in psychotherapy. I'm not a mental health professional so I found it hard work at times, re-reading some sections multiple times until I was sure I understood what was written. However I feel I was well rewarded for my labours, gaining lots of insights and knowledge. I gained an empathic understanding for people who live in an emotional world of psychic equivalence compared to most people who have self-reflective abilities or mentalisation skills.
Two criticisms: Firstly I found the book a bit variable and "bitty". My guess is that this is due to the writing styles of the different authors. Sometimes a technical term would be explained, other times they were thrown in without clarification. But there were frequent unnecessary repetitions in content. And one chapter (chapter 9 I think) where a paragraph was repeated more or less word for word. My second criticism comes from using the Kindle version - no proof reading was done and the scanning of the original text into Kindle format made numerous confusing errors. It was a real challenge at times working out what the text really said compared to what was in front of me on the Kindle screen. These reasons are why I marked it down to 3 stars.