Yesterday someone in r/PromptEngineering posted the fix for a problem I hit constantly: you spend twenty minutes wrestling a chat into shape, “shorter,” “keep the examples,” “use this format,” and by the time it finally works, that perfect version is buried five messages deep in a thread you’ll never open again.
u/Truffle_Journal called it out directly: save the prompt that finally worked, not the whole chat it took to get there. Simple line, but it fixes a habit almost everyone has without noticing.
What’s new
The trick: stop saving your opening prompt. Save the ending. Right before you close a chat that finally clicked, hand it one more instruction that compresses the entire back-and-forth into a single reusable block, task, constraints, output format, all in one place.
The exact wording the original poster uses:
Turn the final agreed instructions from this conversation into one reusable prompt. Include the task, constraints, and output format. Replace details that change between uses with clearly labeled [placeholders]. Leave out instructions we later rejected. Flag any unresolved contradictions instead of guessing.
That’s it. One prompt, run once, at the end instead of the beginning.
The twist
Here’s the part that got me. It’s not just a summary request, it’s a cleanup request. Most people save prompts by copy-pasting the last message and hoping it holds up next time. This instruction explicitly tells the model to drop every correction you rejected along the way, and to flag contradictions instead of quietly picking one and moving on.
That second part matters more than it looks. If you told it “shorter” in round two and “add more detail” in round four, a lazy summary just guesses which one you meant. This one calls it out so you can decide instead of the model deciding for you.
Try it yourself
- 🗣️ Refine your prompt like you normally would, back and forth, until the output is actually right.
- 📋 Before closing the chat, paste the instruction above.
- 👀 Read what comes back before you save it. The original poster is clear on this: review it, don’t trust it blindly.
- 💾 Store it somewhere you’ll actually find again, not buried in a chat history you’ll never scroll back through.
Where it goes next
This is the part that turns a nice trick into an actual workflow. The original poster built Truffle Journal, an iPhone Markdown app that connects directly to ChatGPT, specifically to handle step 4. Once it’s connected, you can:
- Ask ChatGPT to save the reviewed prompt straight into Truffle as an editable note.
- Open it on your phone and revise it yourself, including notes on what to change next time.
- Ask ChatGPT to pull it back up in a future conversation instead of you retyping the same three corrections again.
Setup is a guided 3-step tutorial inside the app, takes about two minutes, one time only. The author’s own tip: finish that tutorial and ChatGPT hands you a free month of Plus, which is a nice bonus for doing something you’d want to set up anyway.
Limitations worth knowing
You don’t need Truffle to use the core idea. Any notes app, a plain text file, a Notion page, all of it works, because the value lives in the instruction itself, not the storage layer. Truffle just removes the copy-paste step and gives ChatGPT a place to write directly. If you’re not on iPhone or don’t want another app connected to your account, the instruction alone still saves you the mess.
Worth noting too: this only works if you actually review what comes back. The original poster says it plainly, ChatGPT assembles the instructions, you decide what stays. Skip that review step and you risk saving a prompt that quietly dropped a constraint you actually cared about.
One commenter, u/Beginning-Cycle747, said they’d been doing something close to this manually, copying final versions into a text file, but “it gets messy quick” without any structure. That’s the exact gap this fixes: a repeatable format beats a growing dump of half-labeled text files every time.
Pro tip
Run this instruction on your next messy chat before you close the tab, even if you have no plan to save it anywhere fancy. The placeholders alone are worth it. Next time you reuse the prompt, you’ll see exactly what needs to change instead of hunting through your own memory for what you edited last time.
Go run this on the next chat where you said “shorter” three times before it finally listened! Check the original thread in r/PromptEngineering for the full walkthrough and setup tutorial. 🚀
Frequently Asked Questions
Q: Do I need Truffle Journal to make this work?
No, the core extraction technique works with any text editor or notes app. The real value is consolidating scattered corrections into one structured prompt with placeholders. Truffle’s main advantage is seamless ChatGPT integration, so you can ask it to retrieve your saved prompt in future conversations without copy-pasting manually. If you use ChatGPT frequently and reuse prompts often, it’s worth the 2-minute setup; otherwise, a well-organized text file does the job.
Q: How do I keep saved prompts from becoming a disorganized mess?
Create a consistent structure: start with the task, list constraints clearly, use [placeholders] for values that change between uses, include the output format, and explicitly note what you rejected (so you don’t re-test those approaches later). Before saving, review the consolidated prompt one final time to catch contradictions, that review step prevents the “messy” feeling most people run into.
Q: How does retrieval work in future conversations?
With Truffle, you simply ask ChatGPT “retrieve my [prompt name]” and it pastes it in; without the app, you grab it from your file. Either way, you’re starting with your refined version, not the original imperfect prompt, so you skip the entire refinement cycle. This saves the most time on prompts you reuse frequently, like report templates, code review checklists, or writing style guides.
Q: Should I save the whole conversation or just the final prompt?
Save only the final consolidated prompt. The goal is to extract the refined instructions without all the back-and-forth that got you there. Include a note about the key insights (e.g., “keep examples”, “use this format”) but leave out rejected approaches, your saved prompt should be immediately reusable without the baggage of the whole conversation.
Keep the instructions you refined—not just the original prompt (Tool share)
by u/Truffle_Journal in PromptEngineering