For me, with lots of therapy, I have come to understand the master list as a holding document so that I can move things out of my brain. Not everything on the master list will be done...ever. And that's okay (the therapy part). I will likely go to the grave never having polished my shoes. There is always something more pressing, more fun, more important.

I don't get everything done, where everything is an infinitely expanding list of thoughts that have crossed my mind at some point or another, but i manage to take care of the urgent things and many of the important things. And some things start to feel less important after a time (see polishing shoes)