Mature Switch (Kodansha Gendai Shinsho) Mariko Hayashi

The “maturity switch” that makes you a little different from yesterday is right there.
Nine years after the best-selling “Encouragement of Ambition”, the long-awaited new book on life from a popular author to the mature generation.

While revealing the current position of his own maturity, such as his appointment as president of Nihon University and how to approach “old age,” he
will write about four themes of maturity, including “Knowledge of human relationships” and “Etiquette for crossing the world.”