GTD. GTD = David Allen's book GETTING THINGS DONE which has been mentioned below already. I've lived the splatter-gun-to-focus process that GTD can create, if you stick with GTD. I blog about GTD on and off. Here is my before/after with pictures: http://restartgtd.com/gtd-journey-after/ and, here is my 5 year GTD time lapse of refactored desks and trusted systems: http://restartgtd.com/gtd-time-lapse/
As somebody who unfortunately is only a fairly recent GTD convert I was wondering if you could elaborate more on why Omnifocus wasn't for you?
I was thinking of buying it for both my Mac and iPhone but I am still undecided as I don't know if it really is the right solution for me. GTD to me most of all is about honestly taking stock of our own shortcomings as human wetware (and pragmatically be OK with it) so I'm essentially asking myself if David Allen would rather be for some organic, haptic "real world" physicality at least..
Personally, following Allens instructions to the letter made GTD "stick", when all the digital tools I tried had failed for me over and over again. Having a physical reminder of everything made building a habit far easier and avoided distractions that come with a computer and a screen.