Have you ever heard of Ted Talks? It's a great website that has many wonderful speakers talking about lots of different topics.
This one is "The Happy Secret to Better Work." The speaker is Shawn Achor. He studies happiness and how to achieve it. Did you know your brain can be tricked into feeling happy by just smiling, the act of smiling sends a message to the brain and tells it your happy. He talks about that in his Happiness Advantage series. If you have 12 minutes this video could make a difference in your life.