I wonder if others wrestle with the bandwidth of their focus like I do.
I have about 50 projects (with gusts up to 80) and 89 Next Actions. These figures are rather low because I've recently pared them down. I could easily double these numbers if I were to collect every single potential action item that crosses my path. I just dont want lists twice as big as what I already have. I'm intimidated enough by the current size and getting weekly reviews (not) done, etc.
Do others out there simply choose to ignore things that come up because you've already got more than you can manage? I do. It takes a significant amount of horsepower to work GTD, and the more you have to manage the more GTD managing you have to do on top of it. I have to be realistic and not bite off more than I can chew.