I have always had concentration issues. In college, I found a way to work around it that worked well for me. In my psych 101 class, they covered ways to help remember things covered in class and for studying. Things like sitting in the same seat, maintaining the same caffeine level, tying key ideas to a two something, like an acronym, or place or person, studying the same time and in the same place, reading material out loud. My first semester in college, just out of the Air Force so it was a huge time of change for me, I used all of these and it really worked. I was terrified that I was going to flunk out, especially after my high school history (dropped out in middle of senior year and got my GED in the Air Force). I aced every class that semester and had a 4.0 gpa after that first semester. I maintained that gpa for 3 semesters and then transferred to a University.

My ability to concentrate is definitely related to how stressed out I am. I have basically no ability to concentrate under high stress situations, and when less stressed, it can sometime be quite challenging too. Of course concentration is also an issue when I'm depressed. I guess the time, currently anyway, where I really can concentrate, is when I'm really into a project and there is no possibility of interruptions, which tends to be in the early morning between 2 am and 8 am.