Be honest. Are you normal? Are your friends and family normal? If the answer to either question is "No," this book will make you feel better about yourself. Either it will make you feel normal by comparison, or it will help you understood what makes a person become, remain, and grow ever increasingly not-normal.
For example, you learn that "not-normal" is...
...genetic. You inherit it from your not-normal ancestors, like the one who drills holes in the floor to fix a leaky roof. You pass the not-normal gene to your children, like the two who play Peter Pan and Captain Hook with real cutlery.
...self-selective, like the high school friends with a roast pig bomb, or an Army staff sergeant with a strong attachment to his wife's prosthetic leg, or the business partner flaunting deelie-boppers at interviews.
...attitude, a wild mixture of payback and chain yanking.
If you find that you are not-normal, I have three more questions for you. Are we related? Do I know you? Are you in this book?