"Thinking, Fast and Slow" is a book I buy for every person for their first birthday after I met them. It is the book that has had the most profound impact on me thus far.
I mean "how to win friends" is similar, it can be summarized with just the 12 chapters, and it's padded out with anecdotes putting it in practice.
I'm sure Seven Habits is the same, I have it on my bookshelf (mandatory reading from my previous employer) and I think I started reading it but I lost interest.