At COSine this weekend, @pluralistic mentioned the song "Somebody Will" by Ada Palmer.
I've been feeling like I've not been doing enough to deal with all of the things going on around us, but the song makes a good point -- that even if you are doing _something_ that might help someone else, who helps someone _else_, who accomplishes the big thing, that is enough.
MMV, but it made _me_ feel better...
http://www.sassafrassmusic.com/songs/sci-fi-fantasy-fandom/somebody-will/