Asking great questions is one of the traits of successful and wise people. Here are some great questions to ask others.
1. Who has been a major positive influence on your life? (Followup - who lately?)
2. What are you reading?
3. What is one of your greatest accomplishments? What is one of your greatest mistakes?
4. What do you regret the most in your life? What would you do differently?
5. What are you happiest about in your life?
6. What is the story around the time you grew the most in your life?