The interviewer at Massachusetts General Hospital may ask you how you measure success to gain a better understanding of your values and priorities. By understanding what success means to you, they can determine if you would be a good fit for the organization and its values. It's important to be honest and thoughtful in your response, as it can reveal a lot about your character and work ethic. Remember, success can mean different things to different people, so there is no right or wrong answer. However, some interviewers may frown upon a candidate who measures success by the amount of money in their bank account or what type of car they drive, especially those working in the medical field.