"Life is 100% About Your Mood" Price: 1,500 yen "Life is 100% About Your Mood: 106 Habits for a Lifetime of Great Days" is an essay collection by Kim Dasul, a bestseller in Korea. This book emphasizes the importance of managing your "mood" to control your life and introduces 106 habits for maintaining a lifetime of great days. It sold over 100,000 copies in Korea within three months of its release and has also become a bestseller in Japan. There is a slight stain on the back, but it has only been read once, so the inside is clean with no noticeable stains.