My Second Brain Lives in Obsidian — Here's My AI-Powered Setup

I used to take notes like this:

• Open note
• Write stuff
• Forget about it
• Never find it again

My second brain was a black hole.

Then I discovered the Zettelkasten method — and combined it with AI. Now my notes actually work for me.

What Is Zettelkasten?

It's a note-taking system developed by a German sociologist in the 1960s. The core idea: each note should connect to other notes. You're not just collecting information — you're building a web of knowledge.

The problem: manually linking hundreds of notes is exhausting. The solution: AI helps you find connections you would've missed.

My Obsidian Setup

The Daily Note Template

Every day starts with a template that includes:

• Morning capture — random thoughts, todos, questions
• Meeting notes — structured with AI prompt blocks
• End of day review — what did I learn? What should connect to previous notes?

The AI Prompt Blocks

Built into my templates:

• Link suggestion prompt — paste any note and it suggests 3-5 other notes to connect to
• Summary prompt — generates a 2-sentence summary for quick recall
• Question prompt — turns dense notes into Q&A flashcards
• Concept explanation — asks "what is X?" and generates a clear explanation

The Zettelkasten Structure

I use three note types:

1. Fleeting notes — quick captures, raw
2. Literature notes — source-based, reference a book/article/video
3. Permanent notes — atomic ideas that stand alone and link to other notes

The AI Integration

Here's where it gets powerful. After each note, I run a quick AI prompt that:

1. Asks "what existing notes does this connect to?"
2. Asks "what questions does this raise?"
3. Creates suggested link names in Obsidian's wiki-link format

Over time, the AI builds a map of my knowledge I'd never have time to build manually.

What You Actually Need

• Obsidian (free tier is fine)
• A willingness to write notes, not just collect them
• The right prompts (I've tested dozens to find the best)

The Complete System

I've packaged my full Obsidian setup as a vault you can copy. It includes:

• Daily notes template with AI prompt blocks
• Zettelkasten structure (fleeting/literature/permanent)
• 15 AI prompts for knowledge management
• Setup guide to get running in 15 minutes

Get the AI-Native Obsidian Vault →

It's $7. If you're serious about building a second brain that actually works — not just another app full of notes you'll never read — this is the system I've been refining for two years.

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What's your note-taking setup? Do you use Obsidian or something else? Comments welcome.