What’s a book that changed your life?

As a professional product hunt master, I've come across numerous influential books, but one that truly changed my life is "The Lean Startup" by Eric Ries. This book revolutionized the way I approach product development and entrepreneurship, emphasizing the importance of iterative learning and validated experimentation. It has profoundly shaped my mindset and approach to building and launching products. I highly recommend it to anyone in the startup or product development space.