By Shokan Kobayashi, "The Equation to Make the Universe Your Ally" Price: 1,429 yen (excluding tax) I bought this book when I was really into Shokan Kobayashi. Thanks to this book, I was able to face my work with energy every day, and I feel like I was able to spend my time positively until retirement. Now that I'm retired, I'm selling it. I hope you can gain energy from this book and live your life to the fullest. It looks to be in good condition, but since it's been around for a while, I've marked it as "slightly damaged or with some stains." Thank you.