This exercise is from Leo Babauta's ebook: 52 changes. Leo Babauta is founder of www.zenhabits.net. He applied this concept himself and is very enthusiastic about the outcome. Here is the exercise
1. Pick a 10-minute spot in your workday, and mark it on your calendar as play. Actually, any activity can be play, but we often get bored with work tasks, so let's infuse play into work.
2. During this 10-minute spot, see what you can do to turn your current work task into play. There are lots of ideas: sing as you do it, give yourself a challenge, give yourself points for doing different things, imagine you're in a movie when you walk into a meeting, dance, see how fast you can do something, pretend you're a wizard, pretend everyone around you is a vampire, call your co-workers 'Jeeves', talk to your computer and give it a name, do a victory dance when you finish something, pretend you're new at whatever you're doing and you've never done it before. I can't stress the importance of work as play enough. It has turned my life into something joyful, it's allowed me to create and accomplish so much more than ever before, and I love every minute of it. I wish you nothing less than this simple happiness.Link: Zen Habits