I have had something similar to this (heavy fog and inability to continue creative work) and I use coffee, bulk vitamins and regular walks with music to work through it.
I also started eating more fresh food and less frozen food, even if it meant eating-out fresh, because it was much worse when I was reheating a lot of tasteless frozen food.
But no matter how hard I try, I have focused my career into an area that requires a lot of creative effort, and I think that this has given me nearly permanent long term memory problems. Over the years, my relationships always get irritated that I don't remember anything. Actually, I thought my memory was normal, until I started to contrast it with people around me who worked in hospitality and such.
I also started eating more fresh food and less frozen food, even if it meant eating-out fresh, because it was much worse when I was reheating a lot of tasteless frozen food.
But no matter how hard I try, I have focused my career into an area that requires a lot of creative effort, and I think that this has given me nearly permanent long term memory problems. Over the years, my relationships always get irritated that I don't remember anything. Actually, I thought my memory was normal, until I started to contrast it with people around me who worked in hospitality and such.