“You’re going to be an exchange student!” I was seventeen and thrilled to hear I was approved to study in Germany. But it was only three months before my departure, and I had never taken a class in German.

The days that followed found me cramming—studying for hours and even writing words on my hands to memorize them.

Months later I was in a classroom in Germany, discouraged because I didn’t know more of the language. That day a teacher gave me wise advice. “Learning a language is like climbing a sand dune. Sometimes you feel like you’re not getting anywhere. But…