How do you Get Things Done?

I recently read Scott Elias’ page GTD in Education, where he demonstrates how he Gets Things Done, based on David Allen’s action management method called Getting Things Done (GTD).

I do not have an explicit system for getting things done, and I think I am cheating myself because of it. On top of teaching and program planning this year, I will be starting a PhD in educational technology in January. All very exciting, but I will need to develop a method for GTD in order to stay sane.

How do YOU get things done?