After purchasing this book, I received the same one as a gift. Since I have two copies, I would like to sell this unused one. ※ As it was a gift, the price on the back of the book has been taped over. It has been stored at home, so if you are very particular, I would appreciate your understanding! A practical book to solve relationship problems based on Adlerian psychology - Title: The Courage to Be Disliked - Authors: Ichiro Kishimi, Fumitake Koga - Publisher: Diamond Inc.