This book discusses the importance of culture and diversity within society through multicultural, cross-cultural, and intercultural encounters while applying psychological effectiveness to manage core competencies. It carefully explains how influential the social environment is to an individual within a society. It seeks to directly affect mental health practitioners’ treatment within practices in accordance to specific ethno-cultural clients; and it seeks to encourage students and practitioners to practice acceptance of diverse groups and multiracial communities. Although understanding various cultural norms and accepting diversity is not always simple, the book promotes a global understanding through identifying cultural benefits within a multiracial, multi-ethnic society, while evoking culturally competent techniques for mental health practitioners.