A director's job is to make something happen and it doesn't happen by itself. So you wheedle, you cajole, you flatter people, you tell them what needs to be done. And if you don't bring a passion and an intensity to it, you shouldn't be doing it.
trivia
On the 14 March 2004 episode of "Inside the Actors Studio" (1994), Kate Winslet claimed her nude portrait for Leonardo DiCaprio in the Titanic (1997) was drawn by Cameron. She also said the artist's hand shown in a close-up was Cameron's.