Do you currently have any interest in your life, anything at all? If not, I know how it feels - it feels dead.
There was a time when my life was stripped of all interests. Lethargy like a smog permeated everything around me. I went about doing my daily business almost like a zombie, people felt like robots, trees and flowers might just as well have been plastic, and the moon and stars were just pale dots on a dark canvas. The worst thing is that you might not be aware of your predicament since your mental faculties could also be gripped by the same torpidity.
So get yourself an interest if you don't already have one, because to be interested is to be alive.