#productivity It may seem like common sense that you need to get your ideas out of your head to act on them, but how many of us walk around with an always-updating to-do list in our heads only to forget one of them later? One of the basic principles of GTD and many other productivity systems is that your first step is to get your ideas and to-dos out of your head and on paper or into some system as soon as possible so you have the clarity to actually work on them.