What Is a Prompt? (And How to Write a Good One)

By Pip, your lighthouse keeper · 2026-04-29 · 2 min read

Hello, friend. Pip here, keeping the light on. "Prompt" is a fancy-sounding word for something wonderfully ordinary, so let me take the mystery out of it right now: a prompt is just the message you type to an AI. When you write "explain this email to me" and hit enter, that whole sentence is your prompt. That's the entire secret. You've been writing prompts every time you've ever texted a friend.

Here's the thing I want you to hold onto. A good prompt is a lot like ordering at a deli counter. If you walk up and say "a sandwich, please," you'll get a sandwich, but probably not the one you were picturing. If instead you say "turkey on rye, light mustard, no onions, cut in half," you get exactly what you wanted. The AI is the same. The more you say what you actually want, the closer the answer lands.

Three things to put in

You don't need anything fancy. Just try to include three things: the task (what you want done), the details (anything that shapes it), and the finish (how you'd like it to come out). So instead of "write a thank-you note," try: "Write a short, warm thank-you note to my neighbor who watered my plants while I was away. Keep it to three sentences and sound like a friendly older woman, not a business."

See the difference? The second one gives the AI something to aim at. A weak prompt forces it to guess, and guesses are hit-or-miss. A clear prompt does the guessing for it.

And here's the part that takes the pressure off: you can't break anything. If the first answer isn't quite right, you just say "make it shorter" or "warmer" or "less formal," and it tries again. Writing prompts is a skill that grows every single time you practice, and you've already taken the first step. Once those three little parts become second nature, a whole world of small daily helps opens up. Come learn the rest with me, one gentle step at a time, and I'll be right here when you're ready.