She found that a simple, ten-minute imagery task (such as picturing clouds in a bright blue sky or a cheery stack of watermelons in a pickup truck) can turn brooding into focused action.

CNN: What really makes people happy

It was colder than ever now, but the sky had cleared, and a bright moon had emerged from the clouds, cold and white in a pool of indigo sky right above the garden.

NEWYORKER: The Cold Outside