Are you ever manic such that you can't really think and can only do one thing or only a few things, repeatedly?

You can't really move beyond a certain area, maybe a room or part of a room or your house.

It may border on or include, catatonia, but it's mostly more elaborate. But it's like catatonia in that you truly feel like you can't do anything else. Ok, it may be mild.

Maybe listening to the same song repeatedly is an example, but anything rather impulsive (or interfering) and something you just did (or continuing what you're doing) or that you often and effortlessly do, without (much) thinking. There may be anxiety.

It may happen with depression, but then you still feel (lots of anxiety only), likely, and you don't do much because of impulse control and impulses meant not to prolong but to end (what you do and how you feel).

They may be two sides of the same coin.