I agree with the comment about going for a long run. I always seem to be in a better state of mind after a few miles. If I'm still having issues maintaining f

I agree with the comment about going for a long run. I always seem to be in a better state of mind after a few miles. If I'm still having issues maintaining focus, then I try to make a list of everything I'd like to accomplish today. By setting smaller goals I get a deeper sense of satisfaction with my work. On a historical note, this is the same notion that is applied in war. Instead of setting your object as "winning a war", the object becomes "take the next hill" or "win the next street".