You are feeling a growing sense of responsibility for another person, but this feeling might actually be more of a sense of guilt. You can't let someone become your project: they have their own life to lead. This person can handle things fine on their own, believe it or not. While it's perfectly fine to share your vision of what you want for their life, you have to be open to the fact that they might not want to hear it. Focus more on fixing what's wrong in your life today.