Ask HN: Non-tech books that have helped you grow professionally?

I've recently moved back to reading non-tech books (I have spent the last years reading on solely programming languages or frameworks) and it was a bit of an eye opener regarding getting a more general picture of startups and businesses. I have read the four hour work week, the daily entrepreneur, and the 22 immutable laws of marketing. I have a few others under consideration (like Peter Thiel's From zero to one) but I'm wondering which other books have you read that have had the most impact on you professionally or even personally?