Worry weighs a person down; an encouraging word cheers a person up. (Proverbs 12:25 NLT)
It's often apparent when a person has the weight of the world bearing down on him. And, it may only take "an encouraging word" to lift him out of the doldrums. Be a "Good Samaritan" every day and look for that person you can cheer up with some gracious words of compassion.