To take this in a slightly different direction:
I've been aggressively culling down my @Work Projects and Next Actions, so that I only have the ones I'm actively working on this week in there. All else goes into Someday/Maybe. That way, I'm not overwhelmed with Projects.
Focusing on only, say, 10 active Projects has helped me to get them done. If something comes up on another Project, it's still recorded in Someday/Maybe for reference.