Interview confidence usually comes from preparation, not from personality. A 30/60/90 approach keeps the work realistic.
30 days: collect your stories
Document wins, conflicts, decisions, and measurable outcomes. Use these as raw material.
60 days: refine answers
Turn your examples into clear narratives with context, action, and result. Practice concise delivery.
90 days: simulate the real environment
Practice under time pressure, improve your questions, and strengthen executive-style communication.