So this study, you became the director of it.

Let's start top-top level then.

How did this study sets out to answer some of the big questions in life, the most important

things about what makes us happy, what keeps us healthy, socially healthy, physically healthy?

You've got the longest study of humans that anyone thinks has ever been done.

You've been studying them for decades upon decades.

Being at that research and being a first party to all of that information, how has it

changed you?

It's very much made me take care of my own relationships.

So because the biggest, most surprising finding in the study was that it's our relationships

that keep us healthier and happier, you know, I'm a Harvard professor.

I could work non-stop until I drop dead.

I mean, that's just the way academia works.

And what I realized was particularly once my kids weren't there pulling me away to go

take them somewhere or do something with them, that I could just work all the time.

And so what I've started doing is to be much more intentional about calling my friends,

about saying, let's go for a walk, let's go out to dinner, let's make sure we get together.

I never would have done that before, particularly as a man.

I think women are much better.

My wife is much better at calling friends on the phone at making sure they get together.

I had to teach myself to do that.

I had to make myself do it.

...