Why Your AI-Assisted Writing Still Feels Flat and How to Fix It (FREE Prompt Sheet)
The prompts I use to turn vague ideas into clear, compelling posts
Most writers on Substack already use AI.
We don’t use AI because we want shortcuts, but because writing is hard.
Ideas are fuzzy. Drafts feel flat. Everything sounds fine, but nothing feels sharp.
This guide focuses on what adding just a little extra detail can do for your writing.
Below are few example prompts that look similar on the surface,
but change the writing significantly.
1. Sharpen the angle before you write
👎 Prompt that doesn’t work
Write a Substack post about productivity.
We’ve all been here, right? You give a broad prompt and get a broad response in return—generic tips, familiar wording, nothing wrong with it, but nothing that sticks either.
You haven’t told AI what matters to you, so it fills the space with safe ideas.
👍 Prompt that works
Help me sharpen my angle.
My niche: focus & productivity for knowledge workers
My audience: ambitious professionals
Here’s my raw thought:
“I work a lot, but my work rarely feels finished.”
What angle would make this distinct from other Substack writers?
Why this works
You’re no longer asking for content.
You’re asking for clarity.
This prompt usually leads to a position like:
The real problem isn’t lack of focus, but it’s that work never feels finished.
That sentence alone tells you what the piece is about.
Not productivity in general, but the mental weight of unfinished work.
2. Generate ideas that think, not instruct
👎 Prompt that doesn’t work
Give me 10 productivity tips for busy professionals.
This produces advice.
Advice is easy to skim and easy to forget.
👍 Prompt that works
Generate content ideas about productivity based on:
- common mistakes
- mental friction
- things people feel but rarely name
Why this works
Instead of tips, you get directions of thought, for example:
Why unfinished work is more exhausting than long hours
The hidden cost of keeping everything “open”
When productivity systems fail because nothing is ever done
These aren’t instructions.
They’re observations people recognize but haven’t articulated yet.
That recognition is what keeps readers engaged on Substack.
3. Question the assumptions hiding in your idea
👎 Prompt that doesn’t work
Expand on this idea and make it more compelling.AI will usually reinforce the same premise you already have.
If the assumption is weak, the writing gets smoother, but not stronger.
👍 Prompt that works
What assumptions do most content writers in my niche make
that might not actually hold true?Why this works
Most writing fails because it accepts the default story.
This prompt helps you surface questions like:
Is “more discipline” actually the answer here?
Does this advice assume people control their workload?
Who does this idea not work for?
Often, the most interesting angle isn’t a new insight —
it’s noticing where the common one quietly breaks.
4. Pressure-test your draft with a critical reader
👎 Prompt that doesn’t work
Improve this text and make it clearer.
AI will polish your sentences without complaint. If that was the goal, mission accomplished. But you were after something more than that, weren’t you?
👍 Prompt that works
Read this draft as a skeptical knowledge worker.
What would you question, doubt, or push back on?
Why this works
This prompt introduces friction before publication.
It forces you to clarify things you may have skipped:
What does “finished” actually mean?
Does this apply in high-pressure jobs?
Where does this idea break down?
Your writing becomes more precise.
5. Use AI to structure thinking, not rewrite it
👎 Prompt that doesn’t work
Rewrite this post to sound better.
The AI will probably give you five versions of your post. None of them will land exactly right. Meanwhile, you’ve wasted time and compute simply by being vague, when a little extra precision would have made all the difference.
👍 Prompt that works
Create a clear outline for this idea:
- start with the observation
- explain why it matters
- show my perspective
- end with what this changes for the reader
Why this works
AI is very good at structure.
You stay responsible for meaning.
The result is writing that feels intentional instead of rambling without sounding formulaic.
6. Let AI help with openings and endings only
👎 Prompt that doesn’t work
Write an engaging introduction and conclusion.
You’ll usually get something polished and generic.
👍 Prompt that works
Opening
Write five possible opening paragraphs in a personal, letter-like tone.
No hype. No bold claims. Just recognition.
Ending
Suggest three endings:
- one reflective question
- one uncomfortable thought
- one invitation to respond
Why this works
You’re not outsourcing your voice.
You’re giving yourself choices, then selecting what feels true.
AI can make you a better writer, but only if you use it to push back on your work and make the details explicit. Keep in mind that AI will always generate an answer. The key difference is that, if you were having this conversation with a human, they would ask follow-up questions to clarify the scope. AI rarely does that on its own, because it doesn’t have that kind of self-reflection and so it doesn’t reflect on the information it’s missing.
Used well, however, it can help you spot where your ideas are vague, too safe (no friction!), or still unfinished.
Here is a download version of my prompt sheet (free!):
