At these talks, Arndt always tells attendees that Star Wars’ enduring appeal has to do with resolving its protagonists goals’ nearly simultaneously, at the climax of the movie. In the comments section of a discussion about a Star Wars talk Arndt gave at the Austin Film Festival in 2010, one attendee of the seminar notes, "Arndt stated that if a writer could resolve the story's arcs (internal, external, philosophical) immediately after the Moment of Despair at the climax, he or she would deliver the Insanely Great Ending and put the audience in a euphoric state. The faster it could happen, the better. By [Arndt’s] reckoning, George Lucas hit those three marks at the climax of Star Wars within a space of 22 seconds."
Indeed, in the third act of Star Wars, as Arndt explained to his young screenwriting Padawans at the 2009 Hawaii Writers Conference, its central characters' main goals all are met on pages 89 through 91 of the original Lucas script: At the crescendo of Star Wars, a spectral Obi Wan urges, “Use the Force, Luke,” and he does, thus reaching his inner goal (fighting self-doubt to become a hero). Han Solo reappears (meeting the philosophical goal of overcoming selfishness with altruism) to shoot down Darth Vader, which allows Luke to use the Force to mentally guide his shot and blow up the Death Star (outer goal and inner goals simultaneously met).
http://www.vulture.com/2012/11/star-wars-episode-vii-may-have-found-its-writer.html