The progress you have made on a big endeavor does not equate to the extraordinary amount of time and effort you have already put into it. It might almost feel like running in place, dear Libra, because you are going and going and seeing very little reward for all of your work. That may be the case now, but that is going to change if you don't quit. Since you aren't seeing much progress, try to imagine how it will look and feel instead, for now at least. Soon enough, the progress will catch up with the effort.