Earl Nightingale - The Self Actualized Human Being

Self-actualization, in Maslow's hierarchy of needs, is the highest level of psychological development, where personal potential is fully realized after basic bodily and ego needs have been fulfilled.
A few examples of behavior a self-actualized person might exhibit include: Finding humor in a given situation. Getting enjoyment and satisfaction out of the present moment. Understanding what they need in order to gain a sense of fulfillment. If you notice, these are some of the very same traits you would mention when you think about a successful person.