This book is full of common sense. On the one hand, you already know everything you'll read in this book. On the other, if you ever feel like you don't have enough time in the day, you'll want to remind yourself of those things by reading Allen's book.

I have trouble remembering things unless I write them down, so when I stumbled upon the Getting Things Done system, it complemented my weaknesses perfectly. I knew everything about Allen's system before I picked up the book, but the book makes everything clearer with concrete examples and a lot of details.

I'm not a self-help book guy, but I actually enjoyed this book a lot. I was excited to read it when I got it from the library, because I'd tried to implement the system without much success. It doesn't read like a self-help book most of the time, either. Allen has terms for all the concepts he talks about, but I never felt like I had to use those terms to explain it someone else, which is a credit to Allen as a teacher. You really come away understanding the details and subtleties of why freeing up your mind really works.

You get some Zen undercurrents with this, and sometimes his system seems very mechanical, but it's exciting to implement and feels completely natural after you've done it for a while. The quotes in the sidebar are kind of annoying, and the last third of the book is much less useful than the first two. But there are a lot of concrete details on organizational tips and how to use your time most efficiently. I highly recommend this book to anyone who feels like there just isn't enough time in the day, because there can be.