How can you brighten your work day? Here's our favorite tips:

1. Do something different at lunch

Whether it's taking 30 minutes to do some midday yoga, or grabbing a sandwich at the new deli across the street, adding variety to your free time is sure to spice up your day.

2. Make someone laugh

Lighten the office mood by putting a smile on your coworker's faces. Laughter is one of the best ways to relieve stress and bond with others.

3. Start a friendly contest

Keep things at work interesting by hosting contests. Anything from work-related endeavors to canned food drives will serve to encourage people to socialize and have fun.

4. Upgrade your office

Print out your favorite quotes to hang up around the room, or find a decorative plant to keep at your desk. Go crazy and buy that comfy office chair you've always wanted.

5. Create playlists

Make lists of songs that encourage various positive moods. Try finding a few inspirational songs to help you stay motivated, or a series of calming tunes for when you're feeling stressed.