It's been mentioned in other places but seems appropriate to add to this discussion as well. If your someday/maybe is getting too unwieldy it may be time to consider splitting it. Some ideas:
- separate work and personal lists
- separate someday (definitely will do) and maybe (those bucket list items, for example)
- separate someday/maybe by Area of Focus
- separate by how often you want to review (weekly, monthly, quarterly, annually)
- add a pending or on-hold list as a transistion tool and decide at an upcoming weekly review what needs to happen with it (sort of like tickling it until the next review)
I completely understand overwhelm - both personally and professionally I have a lot going on. My next action and someday/maybe lists are quite long. In my world, if I decide to put a project into someday/maybe that doesn't stop outside forces from raising it back up to a priority. But that's ok - I just go get it from someday/maybe and start working on it again. That's what someday/maybe is for.
But there are some things you do not need to look at every week. If you've got a lot of far future someday/maybes then splitting them off might make those lists smaller. Only you can decide how often you want to see "Buy/build a sauna" or "Rewrite program procedures" given your current workload and relationship to the item.
Play with contexts and frequency of review until you find something that works for you. And expect it to change as your life changes.