by Rebecca Solnit from Tom Dispatch. (You may want to skip the introduction by scrolling down to the article.)
This inspiration piece may be what you need to counter all the capitalist themes that portray human nature as governed by the lowest impulses of laziness, irresponsibility, and selfishness. Perhaps the propagandists of the ruling classes are merely projecting their own sociopathic qualities on to us.
However, this may not be enough to put you in a good mood. Perhaps you are dealing with frustrations and anger in your life. This 4:02m video might help you vicariously to rid yourself of these demons.