This book was first published in 2004 and I found it very helpful in its purpose.
For me it was a way of identifying the various streams of work and leisure and then helping me reflect on how my diary my email system my filing system could all reflect the same broad streams and so be more easily used.
I used this pre my transition into AppleWorld and so was unable to bring all its flows into my new appleworld when I ”converted” ten years ago.
I think @mikeschmitz will not want this ”system” book but if helped me get started into organising my life better and it did save me many hours of searching for stuff etc. This is a new edition published in 2017.