The little voice

It's always whispering,
Muttering curses, little bits of
Self-flagellation.
It's soft, and often hides
Around company, shy,
Doesn't like to be shown-off much.

It's a nag, though! Constant,
Creeping,
Inspired, with an Imagination
That is vivid, artistic
Almost!

I shut it up, swat at it,
Tell it to eff off,
And it retreats, for a bit,
When the sun shines and the grey cells
Stay busy.

But back in the quietude,
Its favourite hunting-ground,
It springs,
Vicious, like a marauding
Predator, on my dreams.