Wow, you really have lowered your expectations, haven't you? That's why I'm so happy. I'm Angela Duckworth. And I'm Stephen Dubner. I'm a psychologist at Penn, and I run an educational nonprofit called Character Lab. You also wrote the book Grit. Yes. And I am a writer, and I host a podcast called Freakonomics Radio. And you wrote the book Freakonomics among quite a few others.

I did.

And you and I became friends.

We did.

And we discovered that both of us really like to ask each other questions.

And there's only one rule.

The rule is there are no stupid questions.

Today on No Stupid Questions.

How do you know if you're a hard worker?

You come up with a few salient examples, right?

You think of your wife?

You lazy?

No, she's not.

You think of me?

Super lazy.

Andy Duckworth never does anything.

Also, why do happiness levels tend to start dropping around age 16 and not rise again until our late 40s.

To be precise, it's about 47 to 48, and I only say that because I'm 49, and so this matters a lot to me.

Stephen, I have a personal question for you, and I want you to be honest.

Are you a hard worker?

I like that question because it's, first of all, feels like a trick.

Second of all, it is something I think about a lot, but I think about it in terms of

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