Good Will Hunting Its Not Your Fault

Will (Matt Damon s character in the movie) had to go through a lot of hardships in his life as shown in the movie. A person who has gone through so much of emotional turmoil would fall into selfloathing and blame himself for every wrong thing happening to him even though its not his fault or mistake. In order to bring Will out of that self blaming mode and to share his feelings, Sean tells him It s not your mistake and constantly repeats it so that Will accepts the fact that it not his mistake.