I think that the economics of book publishing favor hits with long book runs. You make all your money on the last bunch of books, not the first.
Seth GodinThe challenge is simple: Quitting when you hit the Dip is a bad idea. If the journey you started was worth doing, then quitting when you hit the Dip just wastes the time youโve already invested. Quit in the Dip often enough and youโll find yourself becoming a serial quitter, starting many things but accomplishing little. Simple: If you canโt make it through the Dip, donโt start. If you can embrace that simple rule, youโll be a lot choosier about which journeys you start.
Seth Godin