My Poem

Could anyone please tell me if this poem i wrote is any good?:

My head is whirling,
I can't stop thinking,
My mind is a river,
And I am sinking,
I need to let it out,
I need to be free,
There are so many words,
As vast as a sea,
My own thoughts amaze me,
But I can put them to good use,
I let them out in my writing,
And all my thoughts just break loose.

Please comment! Critique appreciated!