Those who are free of resentful thoughts surely find peace.
I feel like I'm still learning a lot. I think there's a tendency for people who are just doing their first couple of films that I see now where they seem to be really resentful of the technical limitations that come along with filmmaking.
Tell him on the contrary that he needs in the interest of his own happiness to walk in the path of humility and self-control and he will be indifferent or even actively resentful.