I think that your interpretation of the poem makes sense and is valid.

This is exciting to think about, that you could move in the direction of having less need to control everything. What is an example of something in your environment right now that you could let be and not overly control?

I would suggest that you try letting be with one or two things in your environment and then type/write down what you are feeling about this change and how much you will need to actively cope with any distressing emotions that arise--versus how much you could accept, ACT-style, that these emotions are present and not need to actively cope with them or try to change them

Right, it is exciting, it would be so nice to just do something spontaneously for once and not because "I have to".
I'll try your suggestion and let you know how it goes. I'm going to try to be less of a pain with the nursing staff, having to know every lab value, vital sign etc and maybe stop harassing my physicians about getting out of here so I can pack the "right" clothes for treatment. I'll let you know how I'm feeling about the rest of it later, I have to go do physical therapy. (I get to walk around the ward twice, but hey, it's the little things, right?)
I'll talk to you later.
Thanks for keeping in touch, it's really helping me view things in a more positive light