This is a set of 3 books sold together. All three books were purchased about 10 years ago. They have been stored on a home bookshelf. I have decided to part with them as part of my spring decluttering for a new life. I felt it would be a waste to throw them away, so I have bundled them together as a set of 3 related books and set a low price. ① - Title: "Do Only Things That Are Good for Your Brain!" 　- Author: Marci Shimoff, Translator: Kenichiro Mogi 　- Publisher: Mikasa Shobo 　- Copies Sold: Over 650,000! 　- List Price: ¥1,400 + tax Content: This book provides knowledge that improves how you use your brain and is useful in daily life. It approaches positive thinking from the perspective of the brain's mechanisms and functions. It is easy to understand and rewarding to read from a neuroscience perspective. ② - Title: "If You Only Think Positive Things for 9 Days, Your Life Will Change" 　- Author: Wayne W. Dyer 　- Translators: Koya Yamakawa, Akiko Yamakawa 　- Publisher: Mikasa Shobo (Ousama Bunko) 　- List Price: ¥590 + tax Content: Introduces practical methods for thinking only "positive things" for 9 days. It is full of hints for creating a positive life, such as realizing dreams, organizing your mind, and attracting health and money. ③ - Title: "Change Your Last 30 Minutes Before Bed" 　- Author: Tetsuji Takashima 　- Publisher: PHP Bunko 　- List Price: ¥514 (excluding tax) Content: This book explains how to achieve a fulfilling life by changing your last 30 minutes before bed. By improving actions and habits that you do casually every day, you will gain peace of mind, and ultimately, your life itself will change! Shipping Simple packaging (wrapped in bubble wrap, sent via Yu-Packet Post) Condition of the 3 books ・No highlighter marks ・No writing ・No tears or folds * The outer covers have faded and stained due to age-related deterioration. I have taken photos of any areas of concern. (These books have been stored on a home bookshelf for a long time.) Please check them. For those who understand the above points, For those interested in neuroscience, the subconscious, positive thinking, a rich life, life, healthy habits, etc. Thank you for looking.