There are days when the writing just won’t happen. A contributor to r/PromptEngineering shared six bare-bones prompts that push through brain fog and get words on the page anyway. They are short, literal, and built for the moments when your brain has nothing left to give.
The original poster, u/Glass-War-2768, calls it the “Writing Tank” problem. When it’s empty, no amount of staring at a blank document helps. Willpower runs out. Inspiration doesn’t show up on schedule. These six prompts become the fallback that finishes the job, not because they are clever, but because they are simple enough to use when you are running on fumes.
The 6 Prompts, Word for Word
1. Finish My Sentence
“I’m stuck on this paragraph. Finish it for me in a way that sounds natural. Text: [Paste text].”
No setup, no context. Paste what you have, get the rest. This works especially well mid-draft when you have the opening of a thought but the conclusion won’t come. Instead of sitting with the cursor blinking, you hand it off, see what comes back, and then tweak the output to match your voice. Most of the time the result gets you 80% of the way there, and fixing 80% is a lot easier than inventing from scratch.
2. Bullet Point to Paragraph
“Turn these 3 bullets into a professional paragraph. Keep it simple. Bullets: [Paste bullets].”
Good for when you have the ideas but not the energy to string them together. This is the prompt for everyone who writes in outlines but dreads the expansion phase. You brainstorm fast, get the bones down as bullets, then let this prompt build the connective tissue. It also works for meeting notes. Three bullets from a call turns into a clean paragraph for a summary email in seconds.
3. Make it Shorter
“This is too long. Cut it in half without losing the main point.”
Editing is often harder than writing. Your brain has to hold two things at once: what you meant to say and what you actually wrote. This prompt offloads the trimming entirely. Paste in the bloated version, get back something leaner. It is particularly useful for introductions that drag before they get anywhere and for any paragraph that starts with “In today’s fast-paced world.” You already know those need to go.
4. Change the Tone
“This sounds too stiff. Make it sound friendly but still professional.”
Useful when something is technically correct but reads like a legal notice. This one also works in reverse. If something sounds too casual for a formal context, flip the instruction: “This sounds too casual. Tighten it up without making it cold.” You can be specific about the audience too, like “make it sound like you are explaining to a colleague, not a committee.”
5. Check for Mistakes
“Read this. Fix the grammar. Don’t change my style.”
That last line matters. Without it, AI rewrites instead of proofreads. The difference between a light proofread and a full rewrite is that three-word instruction at the end. If you find the output still drifts too far from your original voice, add one more line: “Only fix errors. Keep every word that isn’t broken.” That extra constraint tightens the leash considerably.
6. Draft a Reply
“Reply to this. Say ‘Yes’ and ask when they want to meet. Text: [Paste message].”
For the days when even a two-line email feels like too much. The key is being specific about what you want the reply to accomplish. The more exact the instruction, the less you have to edit afterward. “Say yes, confirm the budget number they mentioned, and ask for a call this week” takes thirty seconds to write and saves you five minutes of agonizing over phrasing.
✍ Where These Actually Help
- Email replies between back-to-back meetings when you just need something sent
- Blog or newsletter sections that stalled halfway through
- Social posts that need tightening before you hit publish
- Project update messages where the facts are clear but the words won’t come
- Any writing task you’ve been putting off because it feels too involved
What Makes Them Work
The author kept each prompt short and literal. No elaborate context, no role assignment, no system prompts. That’s the point. When you’re tired, you don’t want to engineer a prompt. You want to paste something and get an answer.
A few have subtle guardrails worth noting. Prompt 5 adds “Don’t change my style” to stop AI from rewriting from scratch. Prompt 6 tells AI exactly what to say and what to ask, so there’s no ambiguity to slow things down. These small constraints are the difference between a prompt that helps and one that sends you down an editing rabbit hole longer than the original task.
Worth trying small variations too. On Prompt 3, swap “cut in half” for “cut to 3 sentences” if you have a specific target length in mind. On Prompt 4, replace “friendly but professional” with whatever tone actually fits the audience, like “direct and warm” or “confident but not pushy.” On Prompt 6, give it the exact outcome you want so it doesn’t have to guess. The more specific the instruction, the less cleanup you do on the other end.
The deeper reason these prompts hold up is that they stay out of your way. They do not ask you to describe your audience, explain your goal, or define success. They assume you already know what you need and just want help executing it. That assumption is correct on most low-energy writing days.
Prompt of the Day
The most versatile one from the set:
“This is too long. Cut it in half without losing the main point.”
Works on anything. Emails, bios, blog intros, LinkedIn posts, product descriptions, executive summaries. Paste and trim. If you only bookmark one prompt from this list, make it this one. Cutting is the skill most writers struggle with most, and this prompt does it without ego or attachment to your original word count.
Head over to the original r/PromptEngineering discussion to see the full post and share the low-effort prompts you actually reach for on bad writing days.
6 Prompts for When You’re Too Tired to Write Another Word
by u/Glass-War-2768 in PromptEngineering