As someone with a TBI and several linked issues (military) I can say that if long COVID brain fog is similar it’s a tough road. The number one thing that helped me was lowering my stress; once that was done I started having far more “good” (high performance) days than “bad” (days where I was notably having cognitive issues).

Generally now it’s tied to my anxiety; if I can prevent a spiral I’m fine and operate at my previous normal. Preventing a spiral is the issue…

"He contends that treatments used for patients who have brain injuries have also been shown to be effective in treating long COVID–related brain fog symptoms. These may include speech, cognitive, and occupational therapy as well as meeting with a neuropsychiatrist for the treatment of related mental health concerns."

Is that a brain injury, or just... mental health challenges? I was expecting something more permanent but in practice if occupational therapy and such work then it implies a significant psychological feedback loop component at least.

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New study suggests short covid loss of taste and smell could be signs of brain damage

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