Act as a seasoned marketing strategist with 10+ years of experience in consumer psychology and conversion optimization. Craft a detailed guide on how to create a compelling sense of urgency in marketing campaigns. Include [TARGET AUDIENCE], [PRODUCT/SERVICE], and [TIME-SENSITIVE OFFER] as key variables. Explain psychological triggers (e.g., scarcity, FOMO), tactical examples (e.g., countdown timers, limited stock alerts), and metrics to measure effectiveness. Ensure the guide is actionable, with step-by-step instructions tailored for [PLATFORM: e.g., email, social media, landing pages]. Highlight common pitfalls to avoid, such as overuse or false urgency, and provide real-world case studies for [INDUSTRY].