Although not my genre of choice, I do love your free verse poems. This piece delivered a very meaningful message and you have an awesome word choice. I love the way it ended, though I would shorten the last line a bit for the sake of flow:

Giving all then giving in leaves nothing left to do.

I might say
Giving all leaves nothing left to give
or
When all is given what is left to offer?

Just some suggestions. Overall the poem was great!

Unity dances amid acceptance and regret
This theme developed through despondent accord

sensitive expression....