The book basically confirmed for me that I needed to transition. Those sections that you mentioned were the deciding factor for me.
I am glad it helped you as well. Always remember that this is your life and your journey. The decision to start transition, for me, really was and has been a "last option". If you do decide to do anything, think about what you want and need and don't let others pressure you in anything. This is about you and your needs. Not some standard or strict definition of gender.