When I find deep angst and a heavy heart, I get a lot of relief when I see something abstract or surreal such as the surreal paintings by Salvador Dali or some serious articles about sadness and depression. I get to know that I am understood. I am no super-human who can manage all his woes on his own. I sometimes find external re-assurance very comforting, though its a luxury.
I know not what it is about sadness, but I feel a lot of satisfaction in the solitude of these dark fields of misery. I feel in the deepest well of sadness and the skies above comforting me.