Mental blocks and DPDR

Hi, I'm hoping to illicit some advice from some of you.

I've been dealing with depersonalization/derealization for over a decade now, and while I'm able to deal with it most of the time, it comes with a really aggravating side effect: constant mental blocks.

I'm generally unable to read, perform in any of my hobbies, or even find joy in most things, because of an odd and very strong mental block. It's sort of like my mind (or subconscious) is deliberately pulling my attention away and causing a noxious response to doing these things.

To be honest, I've been bored for years now and have no way to do anything about it because something won't let me. I used to and still do love to learn, but it's like my attention span is absolutely unwilling to yield.

I'm in my mid twenties, so I've lost a lot of my youth to dealing with this garbage.

I've had an MRI and there's nothing negative to speak of in the results, I'm on no medication, and I really am at a loss.

Does anyone have any experience with this sort of thing? If so, what helped?

Thanks.