This report provides a reflective analysis of effective business communication, focusing on the use of diagnostic tools to assess individual communication skills. The author evaluates five diagnostic tools, including the Self-Perceived Communication Competence Scale, nonverbal immediacy, intercultural communication, talk-aholics scale, and willingness to listen, to identify strengths and weaknesses. The report highlights two key communication issues: a lack of self-perceived communication competence and a need to improve talk-aholics skills. The author recounts professional interactions where these issues were apparent and reviews relevant literature to support the need for improvement. An action plan is proposed, outlining specific activities, such as joining a mind tool club and attending training sessions, to enhance communication skills over the next six months, aiming for improved interaction with team members and senior management.