The description of your feelings of inertness reminds me of how I usually feel when a depression is gnawing inside my system. My T never brought up depression himself, only on the bills.
Don't condemn yourself for feeling that way. There is a reason for it. And probably a good reason too. You do the best that you can at the moment.
It sounds as if your inner sadness is very strong at the moment, stronger than your need for partying. Maybe you can connect to this sadness and listen for what it has to tell you or find out what it is missing right now.