Aaron Copland:

"It occurs to me to wonder: are you a better person for having heard a great work of art? Are you morally a better person, I mean? In the largest sense, I suppose you are, but in the more immediate sense, I doubt it. I doubt it because i have never seen it demonstrated. What happens is that a masterwork awakens in us reactions of a spiritual order that are already in us, only waiting to be aroused. When Beethoven's music exhorts us to "be noble," "be compassionate," "be strong," he awakens moral ideas that are already within us. "
 

Over time, works of great beauty can change a person.  These works can bring out the person you are meant to be. Protect your ears from mere entertainment.  Find the music that will carve out channels within your soul where beauty and courage can be stored.