DANIEL HOFFMAN: What my family learned from a 12-year-old about inner strength

On a Saturday afternoon earlier this month, I had the privilege of spending quality time with my friend and Fox News colleague John Roberts in the most unlikely of places: the basketball court at the Onelife Fitness in Tysons Corner, Virginia. That’s where staff from the Jessie Rees Foundation led a group of about 100 volunteers who stuffed 3,000 Joy Jars to support kids in the fight for their lives against pediatric cancer.

That’s the same number of Joy Jars Jessie Rees distributed to children...