Kyle McFarlin makes a fun analogy in Knowledge and Yardsale Exercise Equipment
In many ways, I've come to see constant knowledge intake without discipline as being the same as those pieces of exercise equipment you see in yard sales - any one of them would have made life decidedly better for the subject if only they had picked one and used it consistently.
He calls this phenomenon "knowledge without discipline." I love it. Most of my interest in Personal KM relates to this idea. We all have access to more information than we could possibly consume in useful ways. What is important is determining ways to find the most relevant and useful information at any given point in time. This requires both that I know from where that information comes and how the tools I have can process and manage all that stuff.