This book left quite a big impression on me.
Why is it so hard to change certain things? Why do I still get insecure about my body even though I know so well what influence the ideal body image has on me and where it comes from? Why do I still do all these things even though I think they're silly? Why does it take so much time for things we think and believe in to be reflected in the world outside our heads? It's shame! It suddenly all makes sense. Shame and the fear of shame keeps us in check, holds back development. Someone has to take the first step (in your environment) and the fear of being excluded is bigger than most of us realize.
Important book. Read it, or at least look up Brené's TED talks.