More craft and experience, perhaps, but talent? It just is, and it's mostly in the will to tell a story anyway...

I know follow-ups are unfair/against the rules/what have you, but was there ever any particular story that has hit you with the realisation of "This is IT - it's saleable - I have to do it, whatever the cost?"

Dos it happen that you walk into a bookshop, pick up a book that looks midly interesting, look inside, and go "Urgs, I could do so much better"?