Nicholas explains the master list:

How do you use it?

• Capture everything on it at any time, day or night. Work or play. For that reason, I prefer a paper notebook. It can be on my desk, in a vacation roller bag in a gym back-pack. It does not need electricity; it does not need wi-fi; it can’t ‘go down’.
• Towards the end of the day, scan it and break down sizeable items into smaller ones so that everything is both brain (I can do that!) and time (20-minute chunks) friendly. Only your eyes and your brain can do that.
• Then create your day list for tomorrow, bearing in mind pre-booked meetings and thus your true availability.
• Tomorrow, work your day list!