When I'm worried/annoyed/irritated with something and I just don't want to think about it anymore I listen to (and if possible dance to) samba music. Samba is a very happy type of music and it never fails to make me feel better. Let's say I like "to samba" my problems away...
Here is one of my favourite samba songs (it's about the discovery of Brasil in 1500).
Now, make some space in the living room, turn up the volume and samba away with me!