You don't.

Emotions blind my every feeling, leaving me hollow and beaten where my heart is supposed to be. I don’t know how I’m breathing, living in this hell. I’m alone. I’m suffering in ways people only feel in their nightmares. They don’t understand what it’s like. To be alone. To have your heart ripped from your chest, and the being expected to live. To move on. How are you supposed to live without your heart? The same you breath without your lungs, I guess- you don’t.