This one gave me a big chuckle, so thanks for that.
always welcome in the a.m.
I think this is very cute and clever. If you dropped the first line, since you don't need it ( the title has done that job for you ) made a few changes to the third and fourth, I think it would suffice to show that you were full of shift, instead of tell. Either way, I enjoyed this playful little poem. 
My new year's resolution?
I will stop cursing.
Instead,
I will say things like,
"What the elf?"
and "Holy craft!"
But who am I kidding?
I don't curse.
At least not
when anyone's around.
So instead I will remain true
to the
one thing about me
that will never change.
And that is,
I will always be
full of shift.
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