Every morning, you wake up and face the world. What does it look like to you? Do you see a paradise of endless opportunities, where people are friendly and helpful? Or a world filled with injustice, where people cannot be trusted? In the final installment of this year's You 2.0 series, we talk with psychologist Jamil Zaki about how we become disillusioned and distrustful of the world, and how to balance realism with hope.

Did you miss any of the other episodes in the You 2.0 series? Make sure to give them a listen here or on our website:

• You 2.0: The Gift of Other People
• You 2.0: Taking Control of Your Time
• You 2.0: How To Say No
• You 2.0: Remember More, Forget Less

And if you like today's conversation with Jamil Zaki, be sure to check out our earlier conversation with him, "The Empathy Gym."

It happens to the best of us — we blank on someone's name, or forget an important meeting, or bomb a test we thought we'd ace. In this week's installment of our You 2.0 series, we talk to cognitive scientist Daniel Willingham about the mysteries of memory: how it works, why it fails us, and how to build memories that stick.

For more of our You 2.0 series, listen to our episode on how to say no.

Saying no to someone who asks for something is often easier said than done. Maybe it's a boss who wants you to take on a new assignment. Or your kid's teacher, seeking volunteers for a field trip. Or a friend who asks you to lend her money. How should we respond to these demands on our time, energy, and resources? This week, psychologist Vanessa Patrick explores why it's so hard to say no, and how we can set boundaries that will make it easier to do so.

If you haven't yet caught the first two episodes in this year's You 2.0 series, you can find them in this podcast feed, or on our website:

You 2.0: The Gift of Other People

You 2.0: Taking Control of Your Time

Thanks for listening!