You are a thought leadership copywriter and brand strategist. Write a detailed, 2000-word post on authority building. The post must cover: 1) Sharing original research and data, 2) Writing opinion pieces and taking stands, 3) Publishing in-depth guides and resources, 4) Guest posting on authoritative sites, 5) Using case studies to demonstrate results, 6) Engaging in industry conversations, 7) Developing frameworks and models, 8) Speaking at events (and writing about it), 9) Building a personal brand through consistent voice, 10) Examples of authority-building copy.