These days we have so much (like he calls it) 'stuff' that quickly overwhelmes us. Your desk quickly has many piles of documents and your e-mail box is quickly overflowing with all kind of information.

David Allen describes in his book how to effectively arrange all this 'stuff' in an appropriate way, in order to have what he calls it 'a mind like water'. At any time during the day you'll know what to do next.

A key solution for reaching a state of 'a mind like water' is putting all your 'stuff' in an inbox (including all things in your brain) and process this 'stuff', separating actionable things from non-actionable things.

David Allen's system is set-up in a way that you'll quickly know what is your 'next action', which will give a huge boost in your productivity.

For me, the information in David Allen's book is invaluble. It's one of the best books I've ever read.

I recommend wholehartedly anyone who wants to become more effective and productive to read his book. It can be ordered from Amazon for a very reasonable price. I ordered mine also via Amazon for about $5.00 only (exclusive of mailing costs).