People talk about the brain weakening as it ages. Mine feels stronger.

I want to know where joy lives. I'd interview scientists, religious leaders and heads of state. I'd want to find out exactly what makes people happy. I'd want to look into the biology, the chemistry of the human brain.

If you have a negative thought - 'I can't stand my boss' - it perpetuates a negative worldview. But if you supplant each negative thought with three positive ones, you begin to restructure your brain.

When the brain is silent, the executive function, which is this part of the brain that makes decisions, can work much better. So when you get quiet, you make better decisions. You're also more rested - you're not as reactive.

I noted that people are happy here in India. When I went back home, people had everything in the materialistic sense and were surrounded with abundance, but they were not happy.

Once you can laugh at your own weaknesses, you can move forward. Comedy breaks down walls. It opens up people. If you're good, you can fill up those openings with something positive. Maybe you can combat some of the ugliness in the world.