So! I picked this poem because of the theme of shadow that it conveys. Seems pretty simple, yeah? The speaker is reflecting on what looks to be numerous trials and tribulations, and how they were able to come away "bloody, but unbowed". I think this speaks very well to Hirschfield's descriptions of shadow. But! Out of this shadow, comes light! I feel that this particular poem could be titled not just as either "Heaven/Hell, a Detail" but both! That's why I picked it. It also helped me get through a tough time so I guess I am a little biased.
From your poem I actually understood Hirshfield a lot better. From the poem, it's almost a journey through the darkness and struggles and at the end they rise out in victory. It gradually progresses to the "Heaven."
The shadow elements Hirschfield addresses - specifically the proximity to, yet defiance of, death - are powerfully felt in this poem, particularly in the 3rd stanza. It's never named, but we can feel it watching us from between the trees, like the oft-mentioned tiger of the chapter.
But I think what I really enjoy about this poem is how it addresses strife. That's what really affected me about this chapter,is the necessity of strife not only to write well but to live well. Think of how empty life would be without conflict. Struggle is what makes us who we are, and we can see the acknowledgement of its rewards in the last line of each stanza.
This poem is so powerful and it helped me understand Hirshfield's message fully. I pick up on the shadow elements coming through with its strong dark imagery. The internal struggle gives way to a stronger person, and it really makes the 'Heaven and Hell' ideas click. 'I am the captain of my soul,' is a passionate ending that solidifies this poem and the struggles it conveys. Amazing poem! It really fits this chapter!