Thank you for viewing. The 30s, when the momentum of one's 20s is no longer enough, and responsibilities and doubts increase. This is a book that offers gentle yet essential advice in response to the question, "How should I live from now on?" Based on the experiences of numerous successful people and predecessors, author Ken Honda carefully explains 17 items of things you should experience and things you should let go of in your 30s. * You are unsure about your career, marriage, or life choices. * You want to greet your 40s in the best possible condition. * You want to re-examine your own standards of happiness. After reading, you should feel a sense of lightness in your heart and notice a slight change in your actions starting tomorrow.