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/