Two-book set of Kazuko Watanabe's works, contributing to personal growth. - Author: Kazuko Watanabe - Title 1: Happiness is Determined by Your Heart - Price: 1,000 yen - Title 2: Do It Because It's a Hassle - Price 2: 1,000 yen This is a two-book set by Professor Kazuko Watanabe. I am selling these to organize my bookshelf. They were stored flat with covers on. Both books are in very good condition. #KazukoWatanabe #NotreDame #InThePlaceWhereYouAre #SeishinGakuen #Happiness #Peace