I could be anyone

I could be anyone. The silent wind grazing your arms and sending shivers down your back, the sound of your pulsating heart throbbing, echoing inside your head, the bright green pencil the person who sits next to you uses every day. I could be anything. I could be envious... So I am. Every time I stand up no one looks my way. Am I a soulless body, dragging its self through the day? I put my tongue between my teeth and bite. Hard. What does it feel like to be real? I watch you slouch in your seat, your eyes fluttering, open and closed. You are the predictable book that I flip through, hardly bothering to even glance over the pictures. But I. I am the book that's never even left the shelf. Do you enjoy watching me collect dust? I swallow, the sound of your footsteps echo through the hollow hallways, passing through me as though I am dissolving into the sky.
"Who are you?" Your voice tries to coo calmly, but I can hear the desperation clinging in your throat. You're trying to claw your way out of this darkness, but do you really want to see the light? I told you that I could be anyone, I've laid my whole being for you and am now waiting, waiting for you to see what you've always seen, but a second time. And when I give you an answer, don't be afraid to meet me halfway, you are so close to escaping the poison of your own mind.
I can hear your heavy breath and I know the truth. I would tell you not to bother with the reverberation your words, but, "Who are-who are you?" they double over themselves too immediately to be heard distinctly. Do you feel me now? I could scratch open your chest, watch you heave as your secrets pour out, an unending tale of clandestine sin. And you, oh you, you thought you would win.
Have you ever come across a serpent devouring its own tail? I can tell you desire to make something of yourself. But what are willing to risk, would you eat your own tail for the chance of eternal life? Stop wringing your wrists and listen to me, listen to the world as you know you never have before.