Start at the destination.

You ask for help with something and get an essay about it. Every sentence is reasonable, and none of it is the thing you needed.

The fix is to say where you want to end up before you say anything else. Destination is the D in DREAM, and it is the one part every prompt needs. It answers three plain questions. What is the thing: a plan, a table, a text message, a decision? Who is it for: you, your brothers, a landlord, a nine-year-old? And what shape should it take: how long, in what format, ending with what?

A useful test: could a stranger tell when the job is done? “Help me plan my mom’s 70th birthday” has no finish line. The assistant could write for a page or for an afternoon and neither would be wrong. So it hedges, and you get a tour of everything a birthday might involve.

Result first, steps only if they matter

Plenty of people brief an assistant the way they would train a nervous new hire: first do this, then that, then check the other thing. You can skip most of it. OpenAI’s prompting guide for ChatGPT says to start with the result and to describe a process only when the process itself matters. Newer models are good at choosing a route. What they can’t do is guess the address.

Shape matters too, because apps have different habits. Ask the same open question in two assistants and one may hand you a short paragraph while the other builds a report with headings and a table. If you want 250 words, or three options, or one sentence you can paste into a text, say so. Nobody will be offended.

One more rule saves a lot of grief: one prompt, one deliverable. If what you are asking for needs a table of contents, it is two prompts. Get the plan first. Ask for the invitations after.

Side by side

The weak version names a topic. The strong version names a finished object: a plan short enough to text, for two brothers, under 250 words, with a timeline, a task list and who owes what. It even says how to judge the result, since it is done when each brother can read it once and know his job. Notice there are no instructions about how to get there. The assistant can work that out. It only needed to know what “there” looks like.

You may have spotted a few facts sneaking in: twenty guests, $600, three siblings. A destination tells the assistant where to go. It still knows nothing about where you are starting from, and that is the next lesson.