I have MCTD and there are times when I am not all there. Coping skills, like lists, setting time for an activity are helpful. I have been on zoloft for 24 years and it helps focus. Consider a sleep study to see if you have apnea, which affects deep sleep. B-12 is helpful, too. Non-processed diet with low sugar content is important as is hydration and keeping up with electrolytes. I worked fulltime until retirement. But - I have to have that daily walk, a plan for the morning's activities and take time for lunch. I am best at home in the mornings. I am pretty attention deficit, but find that EFT tapping, a daily walk/bikeride/water exercise and so on are important. A good book by Thomas Hartmann, Attention Deficit; A Different Perspective was useful. Now and then a Coke or 1/2 caffeine pill helps.