How to interest people

"For Roosevelt knew, as all leaders know, that the royal road to a person's heart is to talk about the things he or she treasures most. (p. 89)"

     I thought that it is not easy to find something which she or he is interested in. If it was easy, I could talk to people easily. In order to find what they are interested in, we have to listen carefully what they talk. Japanese are apt to be modesty when we talk to new people but to be interested in what they say is easy way to find what they are interested in. I thought I want to try this someday.
Carnegie, D. (1936). How to win friends & influence people. New York. NY, SimonandSchuster