Having read Orthodoxy within the last year myself, I'd say this book did a similar thing for me as well. I doubly recommend reading this book.
Here's how Piper's article starts:
"May 29 is G. K. Chesterton’s 134th birthday. He was a British journalist and brilliant writer. Nobody exploits the power of paradox like Chesterton.
I celebrate his birthday by recommending his book Orthodoxy.
The title gives no clue as to what you will find inside. It had a huge influence on me forty years ago in ways that would have exasperated Chesterton. He did all he could to keep me from becoming a Calvinist, and instead made me a romantic one—a happy one."