Do it again next week

I came back the next tuesday and the chat was gone from my head. Not deleted. I just could not remember which of the twelve "Untitled" threads had the landlord voice I liked. I started over. Claude wrote a new polite email that sounded like a different person.

That is the whole problem this step is for. You already know how to open a small chat, paste the mess, do the boring work, and check the sure-sounding parts. Next week you will forget the prompt that worked.

You do not need a system. You need one place Claude can find the context, one place you told it how to talk, and a prompt you can copy from a note.

A Project is a folder, not a lifestyle

Projects are a current, normal part of claude.ai. Hover the left side and click Projects, or go to claude.ai/projects. Hit + New Project. Give it a name you will recognize in a hurry. Building stuff. Product page. School forms.

Anthropic says Claude does not see the name or the description. Those are for you. I still write a description so I remember why I made the fifth one.

Free accounts can have up to five Projects. That is plenty. Five folders is already more than I used in the first month.

On the right side of the Project page there is a knowledge base. Click + and put the files you keep re-pasting. The lease. The current product page. The voice samples. The FAQ you actually shipped. Anything you drop in there is available to chats inside that Project.

Then Set project instructions. This is not a novel. A short block.

You are helping me write tenant emails for one building. Do not invent building rules. If a fact is not in the knowledge files or the chat, mark it GUESS. Keep replies short. I will edit.

Or: this Project is the product page. Do not say platform. Do not add features we did not paste. When I ask for a rewrite, give me one version.

Chats inside the Project do not automatically share with each other. If you want Claude to remember a doc next time, it has to live in the knowledge base, not only in last tuesday's thread. I learned that by wondering why the new chat had never heard of the lockbox.

You can move an old standalone chat into a Project later from the dropdown next to the chat name. I do this when I realize I have been working in the wrong place for a week.

Star the Project you actually use so it shows up when you hover the left side. Archive the ones you are done with. Do not make a Project for every mood.

Instructions that apply everywhere

There is a second, account-wide box. Click your initials in the lower left, open Settings, and look for Instructions for Claude. Whatever you put there rides along in every conversation.

I keep that one smaller than the Project one.

Do not invent names or policies. If you are guessing, say so. Match the samples I paste. No pep talk.

That is it. I do not put my life story in there. I do not put "you are a world-class strategist." I have seen people paste 2,000 words of identity into that box and then wonder why every chat feels weird.

If a rule only matters for the landlord stuff, it belongs in the Project, not in Settings. The Settings box will otherwise leak into a school form chat and you will get tenant energy on a permission slip.

There is also memory on Free, Pro, and Max, on by default on web, desktop, and mobile. It builds a summary over time. You can tell Claude to remember or forget something, and you can look at what it stored under Settings, Capabilities, View and edit memory. I treat memory as a bonus, not as the system. A Project plus a note I control is still the thing I trust.

The prompt that lives in a note

Do not keep the good prompt only inside Claude. Sidebar chats get long. You will not find the wording.

I keep a plain note on my phone. One heading per repeating job.

Landlord reply Paste the new email. Tell me what they asked and what changed. Draft a short reply. Mark anything not in the thread as GUESS.

Meeting dump Paste notes. Decisions / not decided / checklist for Slack. No extra names.

Product paragraph Paste current text. One rewrite. Keep the limitation. No slogans.

When I sit down next week I open the Project, start a chat, paste the new mess, paste the prompt. Two pastes. I do not try to remember how I phrased it in August.

Update the note when a phrase works. If "I sound tired in a useful way" got you a better email than "professional but firm," keep the tired one. Prompts are just sentences that already worked.

When to leave Claude alone

This series is not a loyalty test. Some work is the wrong shape for a chat site.

Go to Cursor when the work lives in files and code. A repo. A folder of pages. A bug with a stack trace. You want an editor that can see the project and show you a diff. Claude in the browser can talk about a snippet you pasted. It will not stay lined up with the rest of the tree. Anthropic has Claude Code on paid plans if you already live there. Most people I know just want the login bug fixed, and Cursor is easier week one.

Go to Grok when the question is current or search-y. Did this fee change. Is this product still the one people mean in 2026. What did a public company say yesterday. Claude can use web search in a lot of chats, and still I find Grok less stiff when I want a take plus links I can click. Then I bring the two links I trust back into Claude if I need a careful rewrite.

Stay in Claude when you have a pile of your own words and you need an outline, a rewrite, a rant turned into mail, a checklist, a second pair of eyes that you will not blindly believe.

Which tool when is the shorter version of that triangle. You dont need another tool if you are collecting apps again instead of naming the job.

Desktop is optional. Chat on Claude Desktop works on the free plan. Cowork and Claude Code on desktop are paid-plan things. I still do most of this in the browser. An app does not make next week easier if you never saved the prompt.

A tuesday that already works

Open the Project.

Start a chat in it.

Paste the new mess.

Paste the prompt from the note.

Do the boring middle.

Ask it to mark guesses.

Read the thing you will send.

Close the tab.

That loop is the product. The rest is furniture.

If the Project knowledge is stale, replace the file. If the instructions are making every reply too short, edit them. If you have not used a Project in a month, archive it so it stops staring at you.

I would rather have one Project I open every week than a perfect setup I am scared to touch. The first version of mine was a lease PDF, four of my sent emails, and three sentences of instructions. It was enough to stop the fake 48-hour rule from coming back.

You can stop the series here. The next time a landlord email lands, you do not need a new tool. You need the same chat, with the mess in it, and a habit of not sending the sure-sounding sentence you cannot point at.