Oh, I like this poem a lot! The message is really great; the rhyming and flow are sometimes a little awkward. I think if you just touched it up here and there this would be a awesome. Keep writing!
I found a few mistakes. 'Unattached these strings from me' should be 'unattach'. In 'But all I can do is screaming', 'screaming' would sound better as 'scream'.