You could tug at many threads and each would unravel a partial truth.
Steph would undoubtedly begin with the verse he handwrites on his basketball shoes. (Although I must say that the commercial translation of that sentiment into a “brand” whose ads glorify an individual pretty much undermines what St. Paul is really saying:)
“Because I know how hard I’ve worked” would be one of the things Draymond would say if you asked him to explain his own confidence.
But the more I watch this team play—and the more I watch one improbable closing-run after another become inevitable—the more I think this kind of belief is whole cloth.