happy beat, enjoyable songs

[croatia]

most of the days I'm bored and in a bad mood and than listen to songs that talk about problems or have a beat with that vibe, tell me some artists that have more songs that make people feel good and happy. The only artist I know that makes me happy with his music is Will Smith on almost every song, listened to this too today http://www.youtube.com/watch?v=IuDL-TcKXoY its also kind of happyish but not enough. express yourself is a happy song but I want songs that are happier than that.

I don't know how to explain it better just post some names and maybe a good artist I'm looking for will come up

[Almostlity]

http://www.youtube.com/watch?v=gUw-iUObGvc