The Grammar of Happiness is a 2012 English-language Documentary Biography motion picture. Having lost faith and family, his new life is dominated by the desire to leave behind his legacy. The grammar of happiness features Daniel Everett in the title role. The Grammar of Happiness was made on a budget of $55 million and at the box office it grossed only $0 million. Having lost faith and family, his new life is dominated by the desire to leave behind his legacy.