As an introvert, I found some of this book to be truly fascinating and affirming. I particularly liked the discussion about how society ideals about personality have changed and how it is often the loudest and not necessarily the most thoughtful voice that is the one that is heard. I clearly remember as a sixteen year old doing the myers briggs test in class and the popular girls almost having a competition as to who ended up with the most extroverted score, and that somehow = the best or the ideal. I remember how that felt knowing I would never ever end up with a score starting with E. (INTJ) 
 The first part of the book was the most interesting to me and there were many statements where I could absolutely relate. The latter part of the book did not quite resonate in the same way with me. After reading this I have decided I need to find a book about how to parent an extroverted child because I think that is probably where I am struggling the most (why can't she just go read in her room!!). I thought it was personality but actually I think it is that I find it hard to understand the exuberance, talking (all the time) and the need to always be with others - when I myself would choose more solitary activities, quiet time or just a lower energy level. Things to think over indeed. 
 All in all an interesting and affirming book.