i've been feeling like this lately as well.
one thing that kind of helps me is to make a list of things i want to accomplish, and then just start knocking things off. even if they're just little things, or kind of mundane, it's nice to feel like i've done something with my time instead of pacing around thinking about what to do.
also maybe try something new? sometimes just changing up the routine can help you get out of a rut.