Getting next actions reasonable when (re)starting
I have tried to get going on GTD a few times, but I regularly give up when I get enough stuff out of my head that I become overwhelmed with the size and effort of the list of next actions. I have listened to some of the audio stuff that hints at looking at all the stuff that I want done as soon as possible and knocking it down to some stuff to do now and some stuff for someday/maybe.
When you (re)start, how do you split that up so I can look at the next action lists and not get crushed by the mountain of things to do? I know weekly review is going to be a part of the answer, but right now I cant get myself up to a current enough list that doesnt crush me like a bug.
To put this in context, I reguarly guess that my current projects list would take well over 12 months of nonstop work.