Chogyam Trungpa is a controversial figure, however, he was certainly an excellent teacher and had a gift for explaining complex topics. His ability to explain the nature of mind and relate it to Western psychological thought comes across in lucid fashion. While this book does not represent a complete or comprehensive treatment, it certainly has a lot of value and it a good introduction to Buddhist psychology for anyone. It is like a buffet where you can sample and try on a lot of different ideas. If you develop an in-depth interest, there are other more detailed books by this author and many others.