I hope you understand that thoughts are real

I hope you understand that thoughts are real.
They feed on your mind like hungry parasites.
They swell like ticks.  They can ravage or heal.
And they commandeer your appetites.
I hope you understand that thoughts are real.

They skulk like devils in your private hell.
They linger in the air when you are gone.
Become your own exorcist and expel
those revenants you cannot rely upon.
I hope you understand that thoughts are real.