"I am not one of these guys who works job after job after job"

Ed Harris' quote suggests that he is not someone who is constantly changing tasks. He is most likely describing people who are unable to discover a job that they are passionate about and are stuck in a cycle of working task after task. He is most likely indicating that he has actually found a job that he is enthusiastic about and is content with it. This could be translated as a sign of stability and contentment in his life. It might also be analyzed as an indication of aspiration and devotion to his task, as he is not looking for something else. It might likewise be analyzed as a sign of self-confidence in his abilities, as he is not afraid to stay in one task and make it work. In General, Ed Harris' quote indicates that he is content with his job and is not looking for something else.