Who was I?

Sometimes I burn my time like they burn old grass to get more. I guess I’ve burnt too much and the soil under my feet got calcined. My feet caught fire, the flames are spiralling up towards my head. I look down and see nothing but fire getting closer to my melting eyes. They are slowly dropping out of their seats and get burnt the same second. I’m not my vision anymore. I’m not anything at all. Burnt-out darkness and nothingness. What’s left of me? Who was I?