Goodbye, sanity!

This is stuck in my head...no, not a pleasant song...
...but a perennial sense of something going wrong...
My vain attempts to shut it out of my head...
...ends the day, having done nothing, just going to bed...
After yet another day of unproductivity...
...where do I go look for...my disappearing creativity?!
I hear them screaming...
...I see them coming...
Those diabolic devils...
...Do I rightly sense the perils..?

I know I am looking for an ending...
...but have I overlooked the sign at the bending..?