This is a storybook by Tom Percival. It is the story of a girl named Ruby, who is carefree and full of life. She loves swinging up high and exploring wild, faraway places. But one day, she discovers a “worry.” She doesn’t understand it at first and, by ignoring it, unknowingly allows it to grow bigger and bigger. The worry is following her everywhere like her shadow—on the school bus, to the park, and even during breakfast. But Ruby doesn’t take any action to address it.