The component of entrepreneurship that really matters is domain expertise. The way to become Larry Page was to become an expert on search. And the way to become an expert on search was to be driven by genuine curiosity, not some ulterior motive.
At its best, starting a startup is merely an ulterior motive for curiosity. And you'll do it best if you introduce the ulterior motive toward the end of the process.
So here is the ultimate advice for young would-be startup founders, boiled down to two words: just learn."
This is my favorite part. Elon Musk does it this way even after his first few companies. He goes and learns a bunch of stuff to the cutting edge.