For anyone interested in a practical book about charisma and how to learn/develop it, I highly recommend this book that completely changed my life: The Charisma Myth by Olivia Fox Cabane
I read that book as well when I was 20, and while it was helpful I was also surprised watching a YouTube talk by her many years later, and not finding her particularly charismatic!
For anyone interested in a practical book about charisma and how to learn/develop it, I highly recommend this book that completely changed my life: The Charisma Myth by Olivia Fox Cabane