Rubin resolved to jump every day to increase her energy and overall happiness. "Every day, whenever the thought occurred to me, I gave some kind of jump," she wrote. "I jumped in a silly way to make my daughters laugh, I gave a little secret skip on my way to the drugstore, I hopped up and down in my office, I did jumping jacks after I woke up in the morning, I jumped down the last few stairs. The sheer goofiness of it always made me feel cheerier, and the energy of the gesture made me feel more energetic. Energy creates energy."
