This poem probably took some strength to write and post, but you did it proudly. Not only that, but you even stated bluntly who it was for. Good Job. Great Poem. Keep up the good work.
The idea is great and I really like how you jump from the 'yesterday' lines to 'tomorrow' but I think it could have been a lot shorter and to the point (it would make it more powerful). It seems more like a message to someone than a poem, but I understand why you wrote it that way.