Black can pretty easily replaced by "depression". The person in this song struggles with his state of depression. Depression (Black) is always there, threatening to destroy him. He's tried to fight Black, trying to get rid of him (it), trying to defeat him (it), but realizes that Black is part of him. Black cannot be destroyed without destroying himself. The character learns to embraze Black as part of himself, to accept his life as a whole.
Black can pretty easily replaced by "depression". The person in this song struggles with his state of depression. Depression (Black) is always there, threatening to destroy him. He's tried to fight Black, trying to get rid of him (it), trying to defeat him (it), but realizes that Black is part of him. Black cannot be destroyed without destroying himself. The character learns to embraze Black as part of himself, to accept his life as a whole.