Silver Linings Playbook is a 2013 dark romantic comedy about mental illness written and directed by David O. Russell and featuring Bradley Cooper, Jennifer Lawrence, Robert De Niro, Jacki Weaver, Chris Tucker, and more. Silver Linings Playbook was nominated for eight Oscars at the 2013 Academy Awards, including Best Picture, Best Director, and Best Adapted Screenplay, and all four performance categories, with Jennifer Lawrence winning the 2013 Best Actress award.
https://screenrant.com/silver-linings-playbook-ending-explained-tiffany-letter/