Abstract
Because of various factors, represented by the increasingly difficult economic conditions, surrounding environment for companies and projects is becoming more severe. Under such a tough condition, leaders of organizations and projects have to demonstrate strong leadership to succeed. It is necessary for business persons to learn those kinds of leadership effectively. Its way is not, however, clear. In this paper, ways of applying leadership for project managers are explained from three points of view; (1) team management, (2) problem solving, and (3) communication, which are obtained through the experience serving as an executive assistant.