Brava!
When I see writing like that, I am really envious. Why can't I think like that.
The first part of the poem - lines 1 to 19, that is (lol) - were, as GreyJack says, delightful and moving. It showed you changing - being changed, that is. And you used images that would never have occurred to me, but which are just right for the poem; and words that fit precisely, but which I never use.
Then lines 20 & 21. ...And THAT's what the poem's been about! You have been changed without expecting it. But now you have been changed, you have become more "self-aware" and appreciate what has happened.
Oh dear! Look at me! Hope this isn't too analytical (and I hope it's not all wrong too!!!). Just my round-about way of saying this is a nice poem and I enjoyed reading it.
TYWD