If you’re honest, how many tasks and ideas are you trying to keep in your head right now? That’s how many of us function as we go about our work, and our minds become cluttered with everything except the creative work we need to be doing right now.

David Allen, author of Getting Things Done, shares some insights about how creative pros can gain a better sense of mastery over their work, and how we can get ideas out of their head and into a reliable system. (The revised, updated 2015 edition of Getting Things Done is available now.)