Adaptation. (2002)

Directed by Spike Jonze, Adaptation. (2002) stars Nicolas Cage in a dual role alongside Meryl Streep and Chris Cooper. Based on The Orchid Thief by Susan Orlean, the film follows screenwriter Charlie Kaufman as he struggles to adapt the book while becoming increasingly entangled in its characters and themes. The film received four Academy Award nominations, with Chris Cooper winning Best Supporting Actor.

Från IMDB:
A lovelorn screenwriter becomes desperate as he tries and fails to adapt 'The Orchid Thief' by Susan Orlean for the screen.