I experience severe rumination relating to trying to remember thoughts I've forgotten. These are often unimportant thoughts and I'm aware they are unimportant but I still expend considerable energy trying to remember them (these could be creative ideas, things I want to do, etc). If I remember the thought, the anxiety subsides immediately. If I do not, I can be anxious, depressed and basically debilitated for hours or even a whole day or so.

To many, this sounds like "pure O" OCD and I'm wondering if ERP would be helpful? I'm unsure because I don't know what I could effectively be exposed to. When I'm not anxious, the thought of forgetting something in the future isn't anxiety provoking at all and quite frankly seems kind of absurd.