See expert prompt engineering in action. These 7 free LLM prompt examples show what NOT to do vs what gets results with ChatGPT, Claude & Gemini.
Content Writing • SEO
"Write me a blog post about productivity."
❌ Why this fails:
"Write a 300-word blog introduction for busy startup founders about the '2-Minute Rule' for productivity. Use a conversational, slightly irreverent tone. Start with a relatable pain point about morning chaos, then introduce the concept with one concrete example (checking emails). End with a hook that promises the full method. Avoid corporate buzzwords."
✅ Why this works:
Development • JavaScript
"Check this code and make it better." [paste code]
❌ Why this fails:
"Review this user authentication function. I'm concerned about: 1) Security vulnerabilities (specifically SQL injection and password handling), 2) Error handling that doesn't leak sensitive info to users, 3) Performance with high concurrent users. Rate each concern 1-10, then provide a refactored version addressing the critical issues. Use async/await and include brief comments explaining security decisions." [paste code]
✅ Why this works:
Marketing • Cold Outreach
"Write a follow-up email to a potential client who didn't respond."
❌ Why this fails:
"Write a 3-sentence follow-up email to a SaaS marketing director who didn't respond to my initial outreach 5 days ago. The original email pitched a case study about reducing churn by 23%. Tone: confident but not pushy, like a busy peer checking in. Include one specific value reminder (churn stat) and a soft question that requires minimal effort to answer. Subject line should feel personal, not salesy."
✅ Why this works:
Research • Competitive Analysis
"Analyze the competition in the project management software space."
❌ Why this fails:
"Compare Notion, Asana, and Monday.com for a 20-person creative agency choosing a PM tool. Create a comparison table across: pricing for 20 users, mobile app ratings, key differentiating features, and biggest weakness. Then recommend ONE tool with a 2-sentence rationale specific to creative workflows (client feedback loops, visual asset management). Flag any pricing that requires contacting sales."
✅ Why this works:
Creative Writing • Fiction
"Write a conversation between two people arguing about money."
❌ Why this fails:
"Write a 200-word argument between siblings Sarah (32, risk-averse accountant, speaks in measured, careful sentences) and Jake (28, impulsive startup founder, interrupts, uses sports metaphors). They're in their childhood kitchen discussing whether to use their late mother's $50k inheritance to pay off Jake's business debt or save for Sarah's IVF treatments. Show don't tell their personalities through dialogue only—no scene description. End with one character storming out but leaving a telling object behind."
✅ Why this works:
Business • Go-to-Market
"Help me plan a launch for my new app."
❌ Why this fails:
"I'm launching a meditation app for burned-out healthcare workers. Current state: 500 beta users, 40% monthly retention, $0 marketing budget, solo founder with 10 hours/week. Create a 90-day launch roadmap prioritizing zero-cost growth tactics. Structure each month as: 2 specific channels to test, 1 content asset to create, and 1 metric to optimize. Flag which tactics require the most time vs. which are set-and-forget."
✅ Why this works:
Personal Development • Coaching
"Help me set goals for the new year."
❌ Why this fails:
"Act as an accountability coach. I want to improve in 3 areas this quarter: fitness (currently gym 1x/week, want 3x), side business revenue (currently $200/mo, want $1000), and sleep (currently 6 hrs, want 7.5). For each area, create: 1) a specific weekly commitment, 2) one obstacle I should anticipate, 3) a 2-minute 'emergency action' for bad days, and 4) how to track progress simply. Format as a checklist I can print. Tone: encouraging but firm, like a coach who checks in weekly."
✅ Why this works:
Every good prompt follows this framework:
Who, what, when, where, why
Length, format, style, tone
How to organize the output
What to avoid or exclude
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