A list allows you to forget things even if they're important, because you learn to trust the list to bring it back to you when you're ready for it. It's a way

A list allows you to forget things even if they're important, because you learn to trust the list to bring it back to you when you're ready for it. It's a way to clear your mind and allow you to focus on what's important right now without being distracted by thoughts of other things which are also important but not relevant to the task at hand.