Angra

'Angra' expresses anger and rage about things that happened in my past, a sense of desire to burn everything, a feeling that everything is black and there is no salvation. And yet, this piece expresses the unexpected positive outcomes that "bad things" gave birth to, overtime. Is it possible that things that seemed completely "bad" to us become positive after a while? And if so, what does it mean about our ability to judge between good and evil?