A couple of books here.
1. Caesar by Adrian Goldsworthy.
This is a biography of Julius Ceasar. There’s a story in here about a teenage Ceasar, with no institutional authority and effectively a student at this point, raising a navy to go capture pirates who had previously kidnapped him.
I spent many years thinking about influence without any authority after reading this story and it’s probably had a significant shift in how I see the world and my role in it.
2. The WEIRDest people in the world by Joseph Henrich
I grew up in India. This book helped me understand so much of the cultural differences between American culture and what I grew up with that it is easily one of the most valuable books for any immigrant or anyone from America who has to work across cultures.
3. Debt - The first 5,000 years by David Greber.
The single most valuable thing I took away from this book came pretty early in the book - Buying stocks in a company is effectively loaning money to the company. This book shifted my perspective significantly- I use to see the world as a network of power relationships. Now I see the world as a network of debt relationships. I can not recommend it enough.