When my 12-year-old son Ben took up our wealthy neighbor’s offer to shovel snow for $10 a day, he couldn’t wait to buy gifts for the family. But when that man refused to pay, calling it a “lesson about contracts,” Ben was heartbroken. That’s when I decided to teach him a lesson he’d never forget.

I’d always known my son Ben had a bigger heart than the world seemed to deserve. He was only 12 but carried a determination that could humble men twice his age.

Even so, I never imagined I’d be standing in the icy driveway next to my husband, exacting revenge against the man who thought cheating a child was just another business move.

It all began on a snowy morning early in December. Ben was buzzing with excitement after shoveling the driveway while I made breakfast. He burst into the kitchen, cheeks flushed from the cold.

“Mom, Mr. Dickinson said he’ll pay me $10 every time I shovel his driveway!” His grin stretched ear to ear.