Ah, I like the valiant knight coming in. Sounds like a real badass to me.

If you have characterized the "poisonous" voices as wild beastly creatures, or pillagers- something of foul nature in time with knights and chivalry, I'd think that fit in very well, especially since the breaking point saying "SHUT UP" seemed to be like a damsel-in-distress moment. But considering that it's a poem of thoughts in a general sense, it still works fine.

I know I've been talking a lot about 8th-16th century time-style and I'm sorry for that. I just got up in that thought process after seeing the valiant knight.