"AI is rubbish, I tried it."
9 times out of 10 the person who says this typed 4 words and got 4 words' worth back. The tenth time they are right, and being able to tell which is which saves you from either blaming the tool for your instructions or wasting an hour rewriting a prompt that was never the problem.
A prompt is just whatever you type. That is the entire definition. "Prompt engineering" is a grand name for 4 ingredients.
The 4 ingredients
Who you are. "For my mobile dog grooming business" changes every word downstream. Without it you get writing for a company that does not exist.
What you want, specifically. "An Instagram caption promoting the winter package" beats "something for social media" by a distance. The task, not the category.
Who it is for. A caption for existing clients reads nothing like one aimed at people who have never heard of you.
What good looks like. Length, tone, format, and what to avoid. This is the ingredient people skip and it is the one that makes the output sound like you rather than like a brochure.
Miss all 4 and you get the generic mush people screenshot as evidence AI is overrated. Include them and the same free account produces something you would send.
6 before and afters
Different trades on purpose, because this is not an e-commerce trick. Anything in square brackets is my detail and needs to become yours. Everything outside the brackets is the part doing the work, and it transfers to almost any job.
A landscaper quoting a job
Before: "write a quote email"
After:
Write a quote email for my [landscaping] business. The job is [a backyard rework in Ballarat: turf removal, new irrigation, native garden beds, about 3 weeks]. The client is [a homeowner who has had 2 other quotes]. Total is [$18,400 including GST]. Keep it under 200 words, confident and plain, no sales language. Make clear what is included and what would be extra, because that is where the other quotes will be vague.
Fill those brackets in and you get an email you can send. Leave the vague version and the AI hands you a fill-in-the-blank template with [Client Name] in it, which is just the same blank page with extra steps.
A cafe writing a staff notice
Before: "write a notice for my staff"
After:
Write a short notice for [the 3 casuals at my cafe]. [From next month the opening shift starts at 6.00am instead of 6.30am because the bakery delivery moved. Pin it in the back room.] Friendly and matter of fact, not corporate, no exclamation marks. Acknowledge that it is earlier without apologising for it. 6 sentences maximum.
A bookkeeper explaining something to a client
Before: "explain BAS to a client"
After:
Explain to a client what I need from them before I can lodge [their BAS], and why. [They run a small building company, they are smart but not financial, and they have missed the deadline twice.] Write it as an email. Warm but direct about the consequence of being late. Use a short numbered list of exactly what to send me. Do not explain [the tax system], just the part they have to do.
A physio writing a follow-up
Before: "write a follow up message"
After:
Write a text to [a patient who came in once 3 weeks ago for lower back pain and has not rebooked]. I want them to come back but I do not want it to read like marketing. 2 sentences. Reference [that they were working on the desk setup]. Make it easy to say no.
A retailer writing a product description
Before: "write a product description for a candle"
After:
Write a product description for [a soy candle, 300g, scented with sea salt and cedar, hand poured in Adelaide, burns about 55 hours, $42]. [My customers buy for themselves as a small treat rather than as gifts.] 60 words, warm and specific, no words like "indulge", "luxurious" or "elevate", no exclamation marks.
A tradie writing a follow-up quote nudge
Before: "follow up on a quote"
After:
[I quoted a bathroom reno 2 weeks ago, $24,000, and heard nothing.] Write a follow-up. Short, no pressure, no "just checking in". Give them an easy out and a reason to reply either way, because a no is more useful to me than silence. One paragraph, text message length.
Notice what none of the "after" prompts do: none of them are long. They are specific, which is a different thing. The longest is under 70 words.
Make this prompt yours
Build a 4-ingredient prompt around your own business. Nothing you type leaves this page.
Prompt problem or tool problem
This is the diagnostic worth learning, because it stops you switching platforms when the fix was one sentence.
| What happened | Usually | Fix |
|---|---|---|
| Generic, could be any business | Prompt problem, missing ingredient one | Say who you are and who it is for |
| Right idea, wrong voice | Prompt problem, missing ingredient 4 | Name the tone, the length, and the words you hate |
| Made up a fact, a price, a rule | Not a prompt problem exactly, but yours to fix | Supply the fact instead of expecting it to know |
| Ignored half of what you asked | Too many instructions at once | Split it into 2 requests |
| Went vague after a long conversation | Tool limit, not you | Start a fresh chat and paste a summary in |
| Confidently wrong about something current | Real limitation | Ask it to search and cite, or verify it yourself |
Only the last 2 are the tool. Everything above them is fixable from the keyboard.
Say what you do not want
The single highest-value habit, and almost nobody does it.
AI defaults to a house style: enthusiastic, padded, fond of tricolons and the word "elevate". You will not get rid of that by asking for "professional" writing. You get rid of it by banning things.
A list worth reusing, whatever you are writing:
No exclamation marks. No hype words: elevate, transform, unlock, game-changer, seamless, curated. Do not open with a rhetorical question. Do not tell me what you are about to do, just do it. No emoji. Australian English.
Paste that at the end of any writing request and the output improves immediately. Put it in your saved instructions and you never type it again.
Where the 4 ingredients stop being needed
Once your standing instructions are set up, ingredient one and most of ingredient 3 are already handled on every request, permanently. You stop writing "for my landscaping business in Ballarat, customers are homeowners" and just ask for the thing.
That is the actual progression. Beginners write long prompts because the system knows nothing. People who have set it up properly write short ones, because the context lives in the settings instead of in their fingers.
The limits of a better prompt
Specific does not mean long. Past about 150 words your instructions start competing with each other and the model begins dropping some. If a prompt is getting long, the background belongs in your saved instructions or a project, not in the message.
The first answer is a draft. "Shorter", "warmer", "less salesy", "you have assumed X and that is wrong" are all legitimate and all faster than rewriting the prompt from scratch.
No prompt fixes missing facts. If it needs your prices, your policy or last month's numbers, paste them. A brilliantly worded request for information the model does not have will get you a brilliantly worded guess.
Try it on your last bad answer
Take the last thing you asked AI for that disappointed you. Add the missing ingredient, whichever one it was, and ask again. It takes 15 seconds and it is usually the whole difference.