Holding a grudge can feel like a form of justice, a way of punishing those who have wronged us. But psychologist Fred Luskin says that more often than not, grudges don't hurt the targets of our anger. Instead, they only hurt us. This week, we explore the lingering effects of long-standing animosities, and how to let them go.

If you enjoyed today's conversation, be sure to check out these classic Hidden Brain episodes about apologies and forgiveness:

The Power of Mercy

Healing 2.0: The Power of Apologies

How to Make Amends

National Journal Radio Bonus Episode: South Carolina Sweepstakes