When doing a job — any job — one must feel that he owns it, and act as though he will remain in that job forever. He must look after his work just as conscientiously, as though it were his own business and his own money. If he feels he is only a temporary custodian, or that the job is just a stepping stone to a higher position, his actions will not take into account the long-term interests of the organization. His lack of commitment to the present job will be perceived by those who work for him, and they, likewise, will tend not to care. Too many spend their entire working lives looking for the next job. When one feels he owns his present job and acts that way, he need have no concern about his next job.
Hyman G. Rickover, as quoted in The Rickover Effect (1992), by Theodore Rockwell