Force him to smile. Tickle him; it's considered the strongest stimulus to produce laughter. Use your index and middle fingers. Place them in his armpits and begin to wiggle. He may loosen up and change his mood to playful.

Gather a group of friends and play a game. Some people want to forget their problems instead of discussing it. Play a kid's game, such as hula-hoop, Monopoly, or truth or dare.

Perform a ridiculous one-man comedy show. Trap her in a room with the door behind you. Perform the following: sing a favorite song of hers in a screechy voice, dance like an animal (such as a chicken, bird or bull) to an upbeat song and tell "knock knock" jokes. She may be amused by your effort and laugh.

Listen to his problem. Tell him you understand. Get him to identify his emotion. According to human development specialist Dr. D. Wayne Matthews, “… Describing a feeling often initiates a discussion that will improve the relationship with another person.” Once someone listens to him, he may calm down and talk about another topic.