Your little cousin isn’t listening to your advice. They’re copying your habits.

Younger relatives are not taking in your advice. They are watching how you talk to your parents, how you handle losing, what you do with your phone at dinner, and how you speak about people who are not there. All of it is absorbed without comment and shows up years later in ways neither of you will trace back. There is no way to opt out of being watched.

Pick the one habit you would least like copied and work on that one. That is a more useful hour than any conversation you could have with them.