Many years ago I read this book and found it to be so interesting. Years later, after going back to college and receiving my degree in social work for mental health therapy, I wanted to listen to the book again to see if the relevance was still there (as I never forgot the term ‘tunnelers’). And it was still relevant! Textbooks and teachers taught about ‘locus of control’ while I was in school but this book still makes it understandable. I highly recommend it.