If you don't want to become a better founder, entrepreneur, CEO, or product manager let me give you an executive summary of what are the hard things that Ben Horowitz is describing in his book so that you can skip reading 270 pages that Horowitz wrote and keep pleading ignorance that there are better ways to go about doing business.
Hard things are hard because there are no easy answers or recipes. They are hard because your emotions are at odds with your logic. They are hard because you don’t know the answer and you cannot ask for help without showing weakness.
But if you want to win in whatever you've set to achieve there's no better book than The Hard Things About Hard Things for you to read. I've read quite some management books by now but there's no other book that would come even close to the aggressiveness and blood-thirstiness that Ben Horowitz demonstrates in his book (rap music is the closest analogy to Horowitz's style and rap music is also widely quoted in the book). If I imagine our competition reading this book, I get scared and immediately feel a cramp feeling in my stomach that we're way to soft and mellow to play this game with any chance of success.
The book is not just for founders and CEOs, but for everybody with an entrepreneurial spirit. I'd especially recommend it to all product managers out there as the product manager is a CEO of the product according to Ben Horowitz therefore many lessons that he draws about the job of a CEO applies to a job of a product manager, too.