David Allen’s book ‘Getting things done’, has sold 2 million copies all over the world. The premise of the book is simple enough. That a person needs to move tasks out of the mind by recording them externally. That way, the mind is freed from the job of remembering everything that needs to be done, and can concentrate on actually performing those tasks. Unlike a computer, we can not add more ram to our brains. So we have to free up ram so we can think more. That’s why David’s book is so amazing. It gives you a system to take all that stuff and get of your head, so you can do more. Brilliant stuff.