“Crazy Like Us: The Globalization of the American Psyche” by Ethan Watters.
I have been chronically depressed since I was 6 years old. I have had suicidal tendencies as long as I can recall being sentient. I would estimate this book singlehandedly cured 90% of my mental “disorders”. If you have ever suffered from depression or any “mental disorder” you will thank me after reading it, trust me.