So what have I been doing to build focus? Doing custom games against hard and very hard ai in order to work on my macro. The goals of these sessions is not to cast them or teach someone, but to try and get to 200 food or even 100 food and 2-3 bases by the ten minutes mark.
Why hard and very hard ai and not players? Simply because I just want to focus on making sure I am getting my timing and resource use down while fending off the occassional attack. Once I finish this process I can put it to work against players and then also learn how to fend off the early harrass easier.
So basically, 2 or 3 custom games a night to work on macro. Expect to hear more soon.