If we humbly remind ourselves that each of our jobs are replaceable, our idea of success will change. Success then becomes more intrinsic and less external. It becomes about what we do control and less about what we can’t control. It becomes about living each day with purpose and meaning. So work hard always, and as we seek advancement and promotion, remembering that it’s not the bars, stripes and titles that defines our success. Success will be defined by retiring when and how we want to, knowing each day was of value.