This paper explores personal experiences in building a career in sport psychology and providing consulting services to professional tennis players. It describes the range of services provided, major client groups, and philosophy of service delivery. It reviews the overall training model used in service delivery as well as psychological assessment procedures used in consultation. It also describes how professional services were organized, type of services provided to specific client groups, and specific training components. Factors and issues influencing professional effectiveness and competence are explored. The importance of training and competence in all sport sciences are emphasized. The challenges and hardships encountered in building a successful career in this specialty are reviewed. The need for more effective and responsible applied technology and research is discussed.