Act as a seasoned content strategist with 5+ years of experience in digital marketing and audience engagement. Your task is to outline a step-by-step guide on how to effectively repurpose existing blog content into compelling newsletter material. Include the following key elements: [1] How to identify high-performing blog posts that align with your newsletter goals, [2] Techniques for adapting long-form blog content into concise, scannable newsletter formats, and [3] Strategies for adding exclusive value (e.g., updates, personal insights, or calls-to-action) to repurposed content. Provide examples of successful repurposing and metrics to track performance. Tailor your advice for [B2B/B2C] audiences in the [INDUSTRY] sector, ensuring the content remains relevant to [TARGET AUDIENCE].