What are your favourite problems that you enjoy solving

What can we learn from the problems you solve about you 

1. How to make money

I solve this problem every day.

2. What makes a great relationship?

I've been married for 40 years and I'm in a great relationship now so I have some experience.

3. What's the best way to raise kids?

I have four kids.

4. How do you build an audience?

I've done it many times.

5. How do you get better at something?

I've gotten better at many things, chess, writing, business, investing, etc over decades.

6. What are the best books?

For instance, "The Magician's Land" by Lev Grossman which is the last book in his trilogy (beginning with "The Magicians") is one of my favorite books ever.