* lights the cigar *
Maybe it's that you keep asking questions that you then answer yourself, instead of actually doing much about implementing the answers.
Maybe all you need is to do that CCR macro challenge to remind you of what things are really important.
That is the challenge.
1) You start on CCR, or on "catcher 2" (if you want it darker and edgier)
2) With a junior commander.
3) Against 3 CAI.
4) You only use the following mobile units: Mason, Dart, Scorcher, Slasher, Leveler, Ravager, Crasher.
5) You are allowed to use all buildings in the Econ tab.
6) You are forbidden to build any units from the Defense tab.
7) The only unit you are allowed to build from Special tab is basic radar.
8) Defeat that 3 times in a row. That is the mission.
If you fail, you probably just let your macro get too rusty, and your APM too slow. Try again. That is the way.