I find it is easier to lie about the subject of the writing when I have writer's block. There is no way to prove that the sentences don't describe you, nor would anyone probably care to try. You didn't list three things about yourself so an accurate poem could not be given.
Rough winds shake the wings of my bountiful feast
as I apply forcible pressure to the trigger
I take down the filthy feathered beast.
Poems don't have to make sense or be true. I believe you are just over-thinking it.