I've been feeling similarly lately. I reflect on all the things I just don't have the drive to doc. When I am manic, I'm too disorganized as far as my thought process goes to be *truly* productive when it hits my breaking point. Driving is such a chore, exercise is something that I want to do, but I don't follow through. Organizing my stuff is just something I don't bother with anymore. My credit cards are on autopay, and can hardly be bothered, but I try checking enough to make sure there are no fraudulent charges, that's exhausting too, even thought that shouldn't be that much of a task.
I don't shop the way I used to, unless manic, and I just spend money online by the click of a mouse. I do not feel like going to the store and don't as often as I used to. Everything is just too much for me. I am not on Lithium, but I'm on Gabapentin. Not sure if that has anything to do with this though. I work, but I go through the motions.
I wish I could give some good advice. Just sharing that you're not alone.

Hopefully this will pass soon enough.