Visualize the emotion "happiness" in art.
Think of some of your happiest moments. What does true happiness mean to you? It’s an abstract concept, obviously, so your artistic representation can look like anything. Will it be a formless concoction of colors that inspire joy in you, or a realistic image of yourself having the most fun you’ve ever had? Whatever it means to you, make something to represent happiness.
(Image: "Happiness" by Joep Buijs)