There is something about organizing closets or sleeping floors that is therapeutic. Where once there was a mess, now there is order. And when done to soothe your mood, the activity brings a sense of calm. Short, angry jabs of the broom become slow graceful sweeps, until what was once dirty becomes clean.
Sweeping dirty floors is a great metaphor for tackling most any problem, including anger and fear. Anger tells us where the work needs to be done; activity gives us a place to put that surge of adrenaline, and focusing on the task turns our attention away from fear to the project at hand.