Belief is by no means a sufficient condition, though. You either need money, or people willing to give you money. The latter of which generally requires education and connections, or more luck than most people have.
Belief spurns action. Otherwise we are just relying on luck for money to end up in our hands. At least, that is the way I'm interpreting the above point. We can use both conviction and day-dreaming as a substitute of belief. I think former is what he means in the article. The latter just leads to more and more delusion.