---
title: "I Built an AI Second Brain That Fixes Its Own Mistakes (Karpathy's Method)"
source_url: https://youtu.be/OMyLzJYJKzg
captured_at: 2026-06-09
author: "Nick Puru | AI Automation"
contributor: "ชิดชนก"
platform: youtube
---
# I Built an AI Second Brain That Fixes Its Own Mistakes (Karpathy's Method)

youtube video by **Nick Puru | AI Automation**, 24m43s, uploaded 2026-06-08. URL: https://youtu.be/OMyLzJYJKzg
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## Shared in LINE Note+
- 2026-06-09 07:36 by ชิดชนก

## Description
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0:00 - The "second brain" post 100k people saved but never built
0:27 - What you'll have by the end
1:40 - The whole system: three folders and one file
3:08 - The big idea: the AI is the librarian
3:45 - Step 1: setting up the structure in Cowork
8:01 - Step 2: dump everything into raw
10:47 - Step 3: let Claude build the wiki
16:16 - Step 4: ask questions, answered from your own stuff
18:46 - Step 5: the monthly self-checkup
22:19 - Saving it as a reusable skill
23:16 - Putting the checkup on a schedule