You're in luck, GTD is NOT about sorting 9 stacks into another 9 stacks to just sort them into another 9 stacks!So Now Iím at 3 stacks, maybe/someday, reference & actionable. I think I need to go and reprocess those into the 3 main areas of my life- home, personal, business with the reference, someday/maybe and actionable categories and then oh joy of joys, I can start processing all over again out of those 9 stacks.
Reference means you know for sure that you do NOT have to take any action. So don't take any action about it. Eventually you will file the reference stuff...someday.
Someday/maybe means you are pretty sure you do NOT have to take any action NOW. Take a quick look through that pile. If you might have to take action in the next two weeks, move the item to your Inbox. Set aside the rest of the Someday/maybe pile. You will get back to it someday... maybe. (If you're worried you'll forget to file the reference stuff... then add "File reference stuff" to your Someday/maybe list.)
Now you have only one pile you have to deal with. You have an Inbox and you want to get it down to zero.
Home, personal, business does NOT matter! The questions that DO matter are...
What would this look like if it was 100% handled?
If that's all I had to do, what would be my very next physical action?
Can I handle this right now in under two minutes? If so, do it! After an hour you'll have completed 30 items!
Can I delegate this?
Can I put this off until later? (If so - into the Tickler - or on the Calendar if it has to happen at a particular time.)
Do I need something else to happen before I can do this? If so, it's a Project. Make a Project list and add this item.
Now you have a Next Action to put into your Next Actions list.
Do I need to be in a particular Context - running errands, or online for example? If so put it on the NA list for that Context.
David Allen has a great comment about big-picture planning. He says the view from 50,000' is great but if you don't have any confidence you can get off the runway, then don't worry about the 50,000' view. Get your day to day life under control, then your mind will be free to explore the higher elevations.
I suggest - Print out the list of questions - keep it in front of you - make a schedule to process your In-box two hours in the morning and two hours in the evening... or whatever works for you.