Because, you know, none of us ever having had that experience I'm sure we all wonder.
Worth a read.
Any film production, like a long grueling campaign over months and years, is filled with crisis, compromise, exhaustion, conflict, elation, and blind faith that if one just works harder, the results will turn out all right in the end. During that process whatever anger, frustration, or disagreement you have with the candidate/film you keep to yourself. Privately you may oppose various decisions, strategies, or compromises; you may learn things about the candidate that cloud your resolve and shake your confidence, but you soldier on, committed to the end. You rationalize it along the way by imagining that the struggle will be worth it when the candidate wins.
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You tell yourself to just enjoy the process. That whether you succeed or fail, win or lose, it will be fine. You pretend to be Zen. You adopt detachment, and ironic humor, while secretly praying for a miracle.
Worth a read.