Everybody is different. Some writers can write reams of great books and then J. D. Salinger wrote just a few. Beethoven wrote nine symphonies. They were all phenomenal. Mozart wrote some 40 symphonies, and they were all phenomenal. That doesn't mean Beethoven was a lesser writer, it's just some guys are capable of more productivity, some guys take more time.
Billy JoelLet me go on sleeping and I will lose myself in palaces of sand, and all the fantasies that I've been keeping will make the empty hours easier to stand.
Billy Joel