I would argue that is a bit poorly phrased. One can base their self-worth on being right and simultaneously be humble enough to understand one can never truly know it all and thus be open to criticism and improvement.
Or is there something deeper from the book that better explains the point?
The book is full of gross generalizations and anecdotes. It's a self help/pop psychology book meant to make you feel good, not a proper scientific analysis. That said, it's still a good book that I enjoyed reading and I have a list of quotes saved in a text file that have helped me understand certain family members.
Or is there something deeper from the book that better explains the point?