One book I remember well is Influence: The Psychology of Persuasion (https://www.amazon.com/Influence-Psychology-Persuasion-Robert-Cialdini/dp/006124189X https:

One book I remember well is Influence: The Psychology of Persuasion (https://www.amazon.com/Influence-Psychology-Persuasion-Robert-Cialdini/dp/006124189X https://www.amazon.com/Influence-Psychology-Persuasion-Rober...). That really made me aware of all the things people do to try to influence other people. I probably read that book 15 years ago, but I still recognize sales tactics based on principles in that book. It helped me to be more aware of attempts at manipulation when people are trying to sell things. It had a big effect on what I noticed going on in the world. It's really more about human psychology and how people attempt to influence each other than it is a book about selling.