In this book, there are three stories, which tell us we can't go through our lives easily without facing own past. We can't simply say "past" as what has passed already, because it always affects our "now" very much. So, we must get along with that. Many characters in this book show us how to treat their past and what are caused because of the choice.
I don't like first two stories, because they make me feel something uncomfortable mood. I think such a mood comes from their negative way of thinking, so why I like the third story may be it has the opposite tendency to the other. I found the main character a little same as me,but, being opposite to me, she never worry about her sadness or concen. I learned from her we can't avoid our past time or connection , but we can spend wonderful time if we have own opinion and good friend who can understand us from the bottom of his or her heart.