Keep your workspace tidy.
"Your physical environment has a surprisingly big impact on your mood and performance," says Rock. "Unless you're someone who thrives on chaos, a messy desk will subconsciously make you feel uneasy, pulling your attention away from work." Besides keeping your office space in order, also fill it with positive images, such as framed photos of your family or a shelf full of vacation mementos. Rock says surrounding yourself with these things will help you stay upbeat throughout the day, which in turn fosters focus and creativity.