This review was submitted by mauzenne.
This is the only personal productivity book you ever need to buy. If you even use this SIMPLE process half way, you will become 2-3 times more efficient. If you've ever felt like you have a million things to do rattling around in your head, this book is for you. Mike and Mark are both HUGE fans, and we're BARELY scratching the surface. Buy this book.
Changed my life
I first read this book 5 years ago on the recommendation of another manager who mentioned that it had saved him from drowning under a mountain of email. At the time I had more than 1500 items in my inbox, hundreds of them were marked unread or flagged for follow-up, and I was afraid there were important emails with actions attached that were lost amid the pile of FYIs. I've been using the simple method this book recommends ever since. My inbox is empty, my task list is well organized, and best of all I feel confident that there isn't anything important that I'm overlooking or forgetting. Highly recommended.
GTD saved my career
I could only be told so many times "you're great at sales, but you need better attention to details" before I had to do something about it. Reading this book and using GTD as my default language of organization and project planning changed my life and made me so much more effective in work and in my personal life. I buy a copy of this for every direct, intern, etc.
I've been using GTD for around five years now and it has given me full control over all my commitments so I no longer worry I've overlooked anything and never worry I'll lose an idea. The problem now is people actually complain that I'm too calm under pressure!
What I find is key but rarely gets mentioned are; the weekly review and the natural planning model. They get you to be clear on your goals so you focus your efforts. Add MT trinity and the job's done.
I revisit the book at least once a year to squeeze ever last drop of wisdom out of it.
Most actionable and effective productivity book
I first became acquainted with GtD through online sites like 43Folders and learned a great deal just through that exposure. But the book filled in details and as PaulChan posted, it is worth revisiting regularly to "squeeze every last drop of wisdom out of it."
Bottom line: everything about getting organized and focused is highly actionable. Most books and resources are full of ideas but short on actions. It's just like Manager Tools with its focus on actions.
Without a doubt the single book that changed my career. Such a simple but rigorous and logical approach to getting things done that cannot be recommended more. This is not a book that gives vague ideas but a book that you can follow through step-by-step and make immediate changes. I read this on holiday back in 2000, ordered stuff to get organised to arrive when I got back in the office and never looked back.