David Allen offers to build large lists grouped by context (places of tasks), and not by priority. The second important point, which David says — any your task is not recorded in the system problems, leading to constant brain activity that is precisely the source of stress. If you just record a task, you free your mind from the subconscious thinking of this problem.

David, in some cases, ask questions, which should be answered by yourself, form a response that is appropriate for you. These issues include the selection of storage problems (electronic or non-electronic), the inference of the following tasks to perform based on your level of energy, etc.