I was/am in about the same situation although a decade older. I was having trouble with focusing on tasks to completion and found myself struggling to find words or losing the thread of thought more and more often. I added a new vitamin to my daily supplements and have noticed a difference for the better.

I started taking B Activ, which is a B Complex with Benfotiamine and Quatrefolic from Xymogen, contains the entire spectrum of B vitamins to support adrenal, neurological and stress-related function. 1 capsule a day, per my pharmacist (holistic compound pharmacy) this does not contain cyannide! Which most B vitamin supplements do, she said