Poetic Strike

I wrote my free verses easily
With many ones to choose from
But this structured poem of mine
Is starting to make me feel dumb.

I’ve written for hours day after day
And occasionally taken a rest,
But no matter how hard I’ve tried,
My best just isn’t the best.

I’ve had no problems otherwise.
This seems to be the exception.
Everything else has went so smoothly,
Making this feel like a burden.

Everything else has been a walk in the park,
But this feels more like a hike.
One more line left to go,
And I’m going on a poetic strike.