It only takes three seconds for a negative word to plant a seed of a lie in your heart.
Whether it's picking on a person with no limbs or anyone else, the question is: why would you pick on anyone? Those huge Sequoia Red trees all started with a little seed. If you let a seed of lies grow in your heart and don't replace it with the truth, you will eventually die with that lie.
Discouragement takes a person away from their full potential, but encouragement takes them closer to all they can be.