Unfortunately for me it doesn't shed new light on the subject, but I can see the value in this book to the average person who has never been to therapy or really been honest with themselves. For someone with a low level of self-awareness and hopes of alleviating some problems and fixing perspective in their lives I would give it 4 stars.
The author does an amazing job of using easy to empathize with examples of every perspective or coping skill that they're explaining and the repetition of verbiage makes it easier to fully understand.
The first chapter I found to be very useful in the specific, easy to understand presentation and explanation of skewed perspectives in the problem areas, and the better more logical ways to approach them. Again I think it is solid logic but seems it should be common sense.
I think there were some good coping skills recommended in the subsequent 3 chapters but most of it gave me "power of positive thinking" vibes. And the part in chapter 3(?) about excellentism instead of perfectionism is wonderful in theory to me but contradicts itself in a few places kind of lending itself to false positivity in a way.
Overall I think this book could be very helpful to many people just starting their self discovery journey.