Any songs about being happy and loving life?

I am a dancer and for my senior solo i decided i wanted to do a song about being happy and wanting to keep being happy and just loving life. I absolutely love the song happy by leona lewis but i almost feel like it was overplayed so i am not sure if it is a good one to do. If you have any suggestions help! I would like some type of tempo change and very strong points....no country! Thanks