Hey readers. Phil Rosen here. As you might guess about a writer, I love to read.
I've collected hundreds of books over the years, and stacks of paperbacks line the walls of my room. But the most useful knowledge I've learned comes from a very small fraction of those books.
This is the Pareto principle, more popularly known as the 80-20 rule: Roughly 80% of impact comes from 20% of the causes.