An intense sense of sadness that consumes all of the light within. Your chest is hollow, and your heart is heavy. You can never fill it up no matter what you do. The void is always present. And when you're not numb, you're sick to your stomach. Everything frightens you, and you have a constant fear that something bad will happen. Even the smallest error feels like the end of the world.
There is no light at the end of the tunnel. The agony will never end. You're trapped in this vicious circle.