Oh I loved Freakonomics!! What an excellent question. I want to propose 2 books:
1. Getting Things Done by David Allen. It really changed how I approach not only my workday but pretty much everything that could constitute "work" in my daily life. It's a bit of a learning curve to start, but once you implement GTD in your life it becomes second nature. You can learn about it here: https://gettingthingsdone.com/ and there's a good intro to it here: https://zenkit.com/en/blog/a-beginners-guide-to-getting-thin....
2. How Not to Die by Dr. Michael Greger. When you start thinking of plants as medicine it really changes your whole approach to food and life in general. I've started following his 'daily dozen' and I've got to say that I feel absolutely incredible. (Check out his website here: https://nutritionfacts.org/)
Amazing works of fiction that I come back to again and again include Anna Karenina and The Three Musketeers
Amazing works of fiction that I come back to again and again include Anna Karenina and The Three Musketeers