While I'm awaiting in anticipation for my The Pragmatic Programmer: your journey to mastery, 20th Anniversary Edition book to arrive through mail.

I'm wondering what is the book that had made a huge impact on your life? For me it was by far 4 Hour Work Week that had played a huge role in my life.

Which had shaped me in becoming a voracious reader of books. It had even allowed me to embark on the path of entrepreneurship & startups after more than a decade in reading it.

So what was the "book" that had made a huge impact on your life?