This essay is a reflective analysis of a student's intercultural effectiveness, particularly focusing on the weakness of cultural insensitivity in a cross-cultural management context. The student identifies a lack of knowledge, awareness, and acceptance of cultural differences as key contributors to this weakness, leading to projected cognitive similarity and biased perceptions. The essay then outlines a personal development plan, informed by cultural intelligence theory, to enhance cultural sensitivity. This plan involves acquiring knowledge about diverse cultures through reading and engagement in intercultural discussions. The action plan focuses on developing the heart (motivation and confidence), the head (knowledge and strategies), and the body (behavior) components of cultural intelligence to improve interactions in multicultural environments. References to relevant literature support the analysis and proposed actions.