Content: Work, relationships, money, habits, way of thinking – these ten years determine 90% of your life. Will you regret it, or move forward? A textbook for your 30s that solves all your problems. I am selling this after reading it once. There is a slight snag on the obi (sash). Please check the 6th photo. Thank you for looking. "Don't Waste Your 30s" Shigehisa Nagamatsu