The problem is me.
I don't know what the solution is. When I'm at work, I just want to be at home. When I'm at home, I feel resigned to waste a few hours away until it's time to go to sleep. When I'm out with friends, I just want to get away. I feel like a hollow shell of a person, just moving along a conveyor belt from work to home and back again.
Fortunately, my friend was very tolerant of my complaints. And maybe her therapy of just listening was what I needed. I am sure that at some point I will snap out of this, but right now I am just plodding along-- one foot in front of the other.