I can definitely relate. I'm a knowledge junkie. I've probably read enough to keep me busy for years and years if I actually tried applying everything I've learned. Yet, for some reason, I always want more. I don't see anything wrong with that, because learning is one of my hobbies...
However, I can also see how it might slow a person down. The author offers good information, article by article, chapter by chapter, but they can't stop you from reading the rest of the book before you're ready. I think people want to think more than they want to listen. So when chapter one says "Do this now", they think "Yeah right, maybe after I've read the book, researched it, and thought about it first."
I imagine a lot of people have some level of difficulty with this. A little self control might help. For example, don't read any new stuff until you have mastered the stuff you've already read. One chapter at a time...
Or have somebody keep track of your progress, and they can give you pages out of a book after you've proven to them that you're ready to move on!