You are proving out his point. He focuses on only a few things that work for him and is not paying attention to other stuff. When you say no to most things then

You are proving out his point. He focuses on only a few things that work for him and is not paying attention to other stuff. When you say no to most things then you will by your own decisions have a very narrow view/experience of the world. That is the decision. Do you want to be super successful in one thing or a more balanced life.