Just play some music while at work. Good music has a way of uplifting and inspiring people. It has a direct effect on your mood, making you feel livelier and more upbeat. As a result, work better, concentrate harder and feel more interested in the tasks at hand.
If you work in an office with other people, you are encouraged to use headphones. However, to remain focused on your work and not the music, you want to keep the volume low.