I do this too!
There is so much music I love to listen too!
Try Flags by Brooke Fraser - I've seen her do it live twice, and the last time it was so inspiring it made my sister cry!
Hope you like it!
I like listening to "Beautiful Day- U2" to get me in a good mood, a few Coldplay songs, and lately the song "New Slang-The Shins" really cheers me up..
And when I'm in the mood.... I like listening to anything by Skrillex.