How I Set Up My Second Brain in Obsidian (Without Overwhelming Myself)

obsidiansecond-brainproductivitynote-taking

In my last post, I mentioned that Obsidian is the tool that finally turned me into someone who actually takes notes. This is the follow-up I promised: how I actually set my vault up.

I started with the PARA method (Projects, Areas, Resources, Archives) because it’s the framework almost everyone recommends when they talk about building a “second brain.” And it’s a genuinely good system. But after a while, I noticed I was spending more energy deciding where something belonged than actually writing it down. Is this an Area or a Resource? Does this project note go here or there? It turned into overhead instead of a habit.

Somewhere along the way I picked up advice that stuck with me: the best system is the one that works with you, not one that overwhelms you the moment you start. So I stopped trying to adopt someone else’s framework wholesale and built a smaller one around how I actually think and work day to day.

Here’s what I ended up with.

The folder structure

~/Second Brain/
│
├── 0 - Inbox/          ← everything goes here first, no filtering
├── 1 - Projects/       ← active projects with a deadline
├── 2 - Journal/        ← anything time-based
│   ├── Daily/
│   ├── Weekly/
│   ├── Monthly/
│   ├── Meetings/
│   ├── 1on1/
│   └── Tasks/
├── 3 - Knowledge/       ← things I've learned and actually digested
│   ├── Courses/
│   ├── Evergreen/
│   ├── Ideas/
│   ├── Links/
│   └── People/
└── 9 - System/          ← plumbing, rarely opened
    ├── Templates/
    ├── Scripts/
    └── Archive/

The numbers at the front aren’t decorative. They force Obsidian’s file explorer to sort folders in the order I actually use them, top to bottom, instead of alphabetically.

0 - Inbox

The whole point of this folder is zero friction. Every new note (Cmd + N) lands here automatically, no decisions required. A half-formed idea, a link I want to read later, a blog draft, a random thought, it all goes in without me having to categorize it on the spot. I clear it out during my weekly review, and if something doesn’t have an obvious home by then, it just stays here. That’s fine.

1 - Projects

Anything with a deadline and an actual outcome lives here. My career folder, freelance work, side projects: each gets its own note built from a Project template so I’m not starting from a blank page every time.

2 - Journal

Everything time-based lives here, split by cadence: Daily notes for day-to-day logging, Weekly and Monthly for reviews, Meetings and 1on1 for anything work conversation-related, and Tasks for standalone to-dos that don’t belong to a specific project.

3 - Knowledge

This is the closest thing I have to PARA’s “Resources,” but narrower. It only holds things I’ve actually processed, not everything I’ve ever bookmarked. Courses (structured stuff I’m working through), Evergreen (ideas I’ve distilled into my own words and expect to revisit), Ideas (rougher, unpolished thoughts), Links (curated references by topic), and People (notes on people I work with).

The distinction that matters most to me is Evergreen vs. Inbox: Inbox is capture, Evergreen is digestion. A note doesn’t get promoted to Evergreen until I’ve actually written it in my own words.

9 - System

Templates, utility scripts, and an Archive folder for anything I’m done with but not ready to delete. I almost never open this folder day to day, it just needs to work quietly in the background.

The plugins doing the actual work

I kept the plugin list deliberately short. Every one of these earns its place:

  1. Templater, the backbone of the whole setup. It replaces the core Templates plugin with proper variables (<% tp.date.now("YYYY-MM-DD") %>, <% tp.file.title %>) and, more importantly, folder templates: create a note inside 2 - Journal/Meetings, for example, and it’s auto-filled with the right template the moment the file is created. No manual template picking.
  2. Dataview, lets me query my own notes like a lightweight database. Handy for pulling together things like every Evergreen note tagged a certain way, without maintaining a manual index.
  3. Calendar, a visual calendar in the sidebar tied to Daily Notes. Jumping between days is a click instead of a search.
  4. QuickAdd, I use this for things that are more workflow than note. My job-application tracking, for instance, runs on a couple of small user scripts wired up through QuickAdd macros, so logging a new application or updating its status is one command instead of manually editing a table.
  5. Obsidian Charts, for the rare case I want to visualize something (like progress tracking) directly inside a note instead of jumping to another tool.
  6. Advanced URI, lets other tools and scripts open or create specific notes via URI. Mostly useful for automations that live outside Obsidian.
  7. MDX as MD, a small but important one for me specifically: my blog’s content folder is actually symlinked straight into this vault, and its posts are .mdx files. This plugin lets Obsidian treat and render them as markdown, so I can draft and edit blog posts natively inside my second brain, no context switching to a separate editor.

I also use Bases (Obsidian’s native, built-in database views) on top of each folder. This acts as a Base per folder, filtered by “folder starts with” so it doesn’t break if a path changes slightly. It gives me a table view of, say, every Weekly Review or every SE Career course note, without writing a single Dataview query.

The one feature that makes it all click: linking

If I had to pick the single Obsidian feature I like most, it’s how cheap it is to link notes together. Type [[ anywhere and you get a searchable list of every note in your vault. Pick one, and you’ve got a link. No file paths, no remembering exact names, no friction.

Here’s the concrete example from my own setup. Say I’m working on my ICARE project, which has its own note in 1 - Projects. When I’m writing my to-do list in today’s Daily Note, instead of just writing “work on API integration,” I write:

- [ ] Fix API integration bug on [[ICARE]]

That single [[ICARE]] mention is enough. Back in the actual ICARE project note, I have a Dataview query that pulls in every task, across every Daily Note, that mentions this project:

TASK
FROM "2 - Journal/Daily"
WHERE contains(text, this.file.link)

So the project note automatically becomes a live view of everything I’ve been doing on it, scattered across weeks of daily notes, without me ever having to manually copy anything over. I write the task once, where it naturally belongs (today), and it shows up again where it’s useful to see it in aggregate (the project). Obsidian’s backlinks panel does the reverse of this too. Open ICARE and you can see every note that links to it, project-related or not.

The other habit this unlocked is that I stopped worrying about where things live, because I can always get to them fast:

  • Cmd + O opens the quick switcher, start typing a note’s title from anywhere in the vault and jump straight to it.
  • Cmd + Shift + P opens the command palette, every plugin action, every command, searchable by name, no menu-hunting.

Between linking, backlinks, and those two shortcuts, the folder structure stops being the only way to navigate. It’s more like a filing system for when I do want structure. Day to day, I mostly just link and jump.

What actually changed my habits

The structure only matters if it lowers the friction of writing something down. Two decisions did most of that work:

  • Cmd + N always goes to Inbox. I never have to think about where a new note belongs before I’m allowed to write it.
  • Cmd + Shift + D opens today’s Daily Note, pre-filled. Daily Notes plus Templater means the moment I hit the shortcut, the date, the file name, and the day’s template are already there.

That’s really it. The rest (Weekly Reviews, processing the Inbox, promoting notes to Evergreen) happens on its own schedule, not because the system demands it constantly.

What I’d tell someone starting from scratch

Don’t copy PARA (or my setup) folder-for-folder on day one. Start with just an Inbox and a Daily Note. Everything else (Projects, Journal subfolders, Evergreen) I only added once I noticed I actually needed a place for that kind of note, not because a framework said I should have it.

The best second brain is the one you keep feeding. Mine just happens to have gotten a lot simpler once I stopped trying to make it perfect.