How much time should be spent defining work?
1/ Pre-determined work
2/ Doing work as it shows up
3/ Defining your work
What percentage of a person’s time should be dedicated to defining work?
David Allen: No rules here. “Defining work” usually takes about 30 seconds per input (email, notes, paper, thoughts, etc.), which means 30 to 90 minutes a day for most professionals.
If you want a great guide to help you define your work, grab the free GTD Workflow Map illustrating the steps for processing & organizing.