You need someone who has a really good way of enabling trust in the cast and crew, or the cast particularly, to allow them the confidence to stretch themselves to get the performance that you're going to need to provide all of the emotional up and downs in the film.
Nicholas SparksBeing around someone who accepts and supports you will remind you to accept and support yourself.
Nicholas SparksJamie: You're acting like a crazy person, what's going on? Landon: Right now, you're straddling the state line. Jamie: OK... Landon: You're in two places at once.
Nicholas Sparks