I used to have the same exact issue. There were two things that I did that returned me back to the level that I was accustomed to operating at. 1. High-quality

I used to have the same exact issue. There were two things that I did that returned me back to the level that I was accustomed to operating at. 1. High-quality supplementation. I take Total Balance Men's Premium and Omega 3/QH from Xtend-Life. Please note that "regular vitamins" from your corner drug store or GNC are "McDonalds"-grade vitamins and are simply not sufficient as they contain low-quality nutrients and--pardon the vulgarity--they just get urinated right out instead of being fully absorbed. The downsides with Xtend-Life is that they are pricey and the shipping takes a longer that I'd prefer (they are in New Zealand) but, ultimately, they are absolutely worth it: http://www.xtend-life.com/ http://www.xtend-life.com/ 2. Sign up for Lumosity. It's a cognitive training web site based on sound science from research Universities. They have plenty of working memory and even dual n-back exercises: http://www.lumosity.com/ http://www.lumosity.com/ I can assure you without any doubt whatsoever that if you do both of these things, you'll be feeling tremendously improved--if not even better than the level that you were originally operating at--quickly.