I just want this pain to go away,
But it stays and stays,
To play and play,
With a heart that seems to be made of clay.

I just want this pain to go away.
I don't want to feel it day and day,
As my heart continues to decay,
As my mind continues to sway each way.

I just want this pain to go away.
I just want everything to be ok.
:(

this is pretty good. it flowed even, and had a good rhyme scheme. very good!(: Kudos to you. Hm, criticism time... the lines are short and it is short in itself. the rhyme scheme is a bit typical/average for most poems. I didn't see meter in there, but I may have missed it. All in all though, it was good. Keep working(:

It was pretty good:) I especially liked it toward the end. However, I felt like you could have been a little bit more creative with the rhythm and word choice. It seemed to me that a lot of the time you used obvious rhyming words. Overall, I liked it, though. ^_-

Pretty good. I loved the rhyming in the first stanza, but it seems to taper off a little after that.

day and day,

You may want to change that to "day to day" so it makes a little more sense. Just a thought though.