When you are discontent, you always want more, more, more. Your desire can never be satisfied. But when you practice contentment, you can say to yourself, 'Oh yes - I already have everything that I really need.'
I was young not too long ago, and I know the last thing you want is someone preaching to you.
James Ivory comes close to the actors for the first rehearsal. He more or less lets you direct yourself and then will only correct you if he finds it incorrect.