So incredibly and painfully boring. I didn't feel I learned anything new or interesting about introverts. It gave me the feeling that it was geared towards business people more than anyone else. Also, I felt this book was composed of many case studies and not that many self-help tips. It's my fault, really. I was warned that this was going to be boring and that I should stick to the Ted Talk the author gave instead. However, I needed something to listen to as I commute, something that wouldn't make me feel guilty while I ignored my many other responsibilities. The narrator spoke softly, and I did enjoy listening to her.
Was the book worth it? Meh. Hard to say.