Do you use a "second brain" in your daily work? · AI Online Educators & Coaches

Do you use a "second brain" in your daily work?

Does anyone here run a second brain alongside Claude day to day? Not a notes app you never open, but memory Claude actually reads.

Here's how mine works, in case it's useful:

I keep a folder of small text files: one per client, one per project, plus a short index that Claude loads at the start of every session. Nothing fancy, plain markdown.
Every time I correct Claude twice on the same thing ("shorter emails", "never suggest meeting times without checking my real calendar"), that correction becomes one line in a file. It never makes that mistake again.
When a client replies after 3 weeks of silence, I don't re-read the whole thread. Claude already knows the history: what we agreed, what they objected to, what tone works with them.
The result: proposals, follow-ups and content come out in my voice with my context, instead of generic AI output.

Setup time was basically zero. It's a living project that grows a little every day as you feed it with your daily work, one file at a time. By now, starting a session feels like talking to someone who's been in the business with me for months.

Curious what others do: do you keep client or student context somewhere Claude can read, or do you re-explain your business every chat? What's working for you?

7 comments

Do you use a "second brain" in your daily work?