'Your words have power.' Watch a teacher's lesson in kindness that reached millions!

A teacher's lesson on the power of words blew up on social media.

Natalie Ringold, an elementary school teacher based in Minneapolis, Minnesota, often shares tips with fellow teachers online. But her advice to her students on being kind struck a chord, going viral!

Watch this teacher give a touching lesson on kindness that reached millions!

"If somebody can't change something about themselves in 30 seconds or less, then you shouldn't be mentioning it to them," said Natalie, as she outlined her powerful message.

However, it wasn't only her students who heard her words, as millions responded to her timely lesson all around the world.

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This article originally appeared on USA TODAY: Words matter! A teacher's lesson in kindness goes viral!