Beautiful
That, my friend, was one of the most inspirational and incredible piece's I've heard in a very long time. Basically everything about it was perfect to my ear, and usually I have at least one critical thing to say about a piece of music. This, however, makes my all-time list of awesomeness. Definitely downloading this to save for future use.
I just hope that one day my own mood will brighten up like yours did because this sounds like it's so full of hope for the future it actually makes me not want to kill myself and everyone around me :D (That last part as a joke, I'm not actually going to kill myself and everyone around me. Just everyone around me :P)