This essay is a self-reflection on business communication skills, utilizing five diagnostic tools to identify areas for improvement, specifically public speaking anxiety and low tolerance for disagreement. The reflection incorporates two recent professional interactions to illustrate these communication issues. A literature review explores key concepts and theories related to these challenges, informing an action plan for personal development. The diagnostic tools used include the Self-Perceived Communication Competence Scale (SPCC), Personal Report of Intercultural Communication Apprehension (PRICA), Nonverbal Immediacy Scale Self Report (NIS-S), Talkaholic Scale, and Tolerance for Disagreement Scale (TFD). The analysis of the scores reveals moderate levels of public speaking anxiety and disagreement intolerance, prompting a focus on improving communication skills and conflict management abilities. The essay concludes with an action plan based on the literature review and personal reflections.