This essay presents a self-reflection analysis of the author's communication skills, based on five diagnostic tools that assess interpersonal competence. It identifies two major communication issues: intercultural incompetence and nonverbal immediacy. The essay includes a literature review on these issues, highlighting their significance and the author's personal experiences with them. An action plan with a Gantt chart is designed to address the identified issues. The diagnostic tools used include the Self-perceived Communication Competence Scale (SPCC), Nonverbal Immediacy Scale Self Report (NIS-S), Personal Report of Intercultural Communication Apprehension (PRICA), Talkaholic Scale, and the Tolerance and Disagreement test. The essay provides examples from the author's professional life where these communication issues have negatively impacted their performance and the organization's revenue, emphasizing the need for improvement and cultural competence in multicultural workplaces.