I always find whistling takes my mind off feeling blue. For some reason there's something about it that just makes me forget all my troubles. I forget that my house is on the brink of foreclosure, my finances are in ruin, nobody understands me, all of that just goes away for a few minutes when I'm whistling.
I just wanted to share this with you, because it seriously brightens my day. This guy has lots of happy whistling songs on YouTube. These two are my favorite I think.
YouTube - Awesome Whistling - "My Lucky Day"
YouTube - Classical Whistling