Davide Magrin, a blogger, has much the same opinion I do of Getting Things Done by David Allen, specifically:

Getting Things Done by David Allen is a book that I found tedious, excessively long and filled with corporate buzzwords. Fortunately, it also contains extremely interesting and actionable ideas for personal organization and productivity. Even when isolated from the context, these principles apply very well and can be useful in everyday life.

Getting Things Done in 500 words or less – David Magrin (2 July 2015)

But Magrin has gone further than I have and summarised the book, saying:

I believe that if you get a sense of the main ideas of the book and experiment with them on your own a little bit, you can get the same results you would reach reading the whole book. The only differences would be in your life duration (5 hours longer) and in your wallet’s weight (15 bucks heavier).

I don’t mind the bucks as it’s worth it to me to spend a little cash on these things plus of course Allen should be rewarded for the good bits of his works. I do mind the time, though I seemingly read faster than Magrin.

Still, he has got the book down to 500 words – actually, 389. Read the full piece.