Building a Second Brain: A Proven Method to Organize Your Digital Life and Unlock Your Creative Potential

by Tiago Forte

We need a way to cultivate a body of knowledge that is uniquely our own, so when the opportunity arises—whether changing jobs, giving a big presentation, launching a new product, or starting a business or a family—we will have access to the wisdom we need to make good decisions and take the most effective action. It all begins with the simple act of writing things down.

With a Second Brain at your fingertips, you will be able to unlock the full potential of your hidden strengths and creative instincts. You will have a system that supports you when you are forgetful and unleashes you when you are strong. You will be able to do and learn and create so much more, with so much less effort and stress, than was ever possible before.

Because once made digital, notes were no longer limited to short, handwritten scribbles—they could take any form, including images, links, and files of any shape and size. In the digital realm, information could be molded and shaped and directed to any purpose, like a magical, primordial force of nature.

Human capital includes “the knowledge and the knowhow embodied in humans—their education, their experience, their wisdom, their skills, their relationships, their common sense, their intuition.”1

had found a way to organize information holistically—for a variety of purposes, for any project or goal—instead of only for one-off tasks. And more than that, I discovered that once I had that information at hand, I could easily and generously share it in all kinds of ways to serve the people around me.

treating my thoughts as treasures worth keeping has been the pivotal element in everything I’ve overcome and achieved.

According to the New York Times, the average person’s daily consumption of information now adds up to a remarkable 34 gigabytes.1 A separate study cited by the Times estimates that we consume the equivalent of 174 full newspapers’ worth of content each and every day, five times higher than in 1986.2

Research from Microsoft shows that the average US employee spends 76 hours per year looking for misplaced notes, items, or files.3 And a report from the International Data Corporation found that 26 percent of a typical knowledge worker’s day is spent looking for and consolidating information spread across a variety of systems.4 Incredibly, only 56 percent of the time are they able to find the information required to do their jobs.

Once our notes and observations become digital, they can be searched, organized and synced across all our devices, and backed up to the cloud for safekeeping. Instead of randomly scribbling down notes on pieces of paper, hoping we’ll be able to find them later, we can cultivate our very own “knowledge vault” so we always know exactly where to look.

This digital commonplace book is what I call a Second Brain. Think of it as the combination of a study notebook, a personal journal, and a sketchbook for new ideas.

For many people, their understanding of notetaking was formed in school. You were probably first told to write something down because it would be on the test. This implied that the minute the test was over, you would never reference those notes again. Learning was treated as essentially disposable, with no intention of that knowledge being useful for the long term.

For modern, professional notetaking, a note is a “knowledge building block”—a discrete unit of information interpreted through your unique perspective and stored outside your head.

You start to see recurring patterns in your thinking: why you do things, what you really want, and what’s really important to you. Your Second Brain becomes like a mirror, teaching you about yourself and reflecting back to you the ideas worth keeping and acting on. Your mind starts to become intertwined with this system, leaning on it to remember more than you ever could on your own.

You can’t fail, because failure is just more information, to be captured and used as fuel for your journey.

So much of our intellectual output—from brainstorms to photos to planning to research—all too often is left stranded on hard drives or lost somewhere in the cloud.

The time has come for us to realize the vision of technology’s early pioneers—that everyone should have an extended mind not just to remember more and be more productive, but to lead more fulfilling lives.

There are four essential capabilities that we can rely on a Second Brain to perform for us: Making our ideas concrete. Revealing new associations between ideas. Incubating our ideas over time. Sharpening our unique perspectives.

Before we do anything with our ideas, we have to “off-load” them from our minds and put them into concrete form. Only when we declutter our brain of complex ideas can we think clearly and start to work with those ideas effectively.

In its most practical form, creativity is about connecting ideas together, especially ideas that don’t seem to be connected. Neuroscientist Nancy C. Andreasen, in her extensive research on highly creative people including accomplished scientists, mathematicians, artists, and writers, came to the conclusion that “Creative people are better at recognizing relationships, making associations and connections.”3

known as recency bias.4 We tend to favor the ideas, solutions, and influences that occurred to us most recently, regardless of whether they are the best ones. Now imagine if you were able to unshackle yourself from the limits of the present moment, and draw on weeks, months, or even years of accumulated imagination.

Having a Second Brain where lots of ideas can be permanently saved for the long term turns the passage of time into your friend, instead of your enemy.

the ultimate purpose of a Second Brain is to allow your own thinking to shine.

Our careers and businesses depend more than ever on our ability to advance a particular point of view and persuade others to adopt it as well.6 Advocating for a particular point of view isn’t just a matter of sparkling charisma or irresistible charm. It takes supporting material.

Most important of all, don’t get caught in the trap of perfectionism: insisting that you have to have the “perfect” app with a precise set of features before you take a single note. It’s not about having the perfect tools—it’s about having a reliable set of tools you can depend on, knowing you can always change them later.

Introducing The CODE Method: The Four Steps to Remembering What Matters To guide you in the process of creating your own Second Brain, I’ve developed a simple, intuitive four-part method called “CODE”—Capture; Organize; Distill; Express.

The solution is to keep only what resonates in a trusted place that you control, and to leave the rest aside. When something resonates, it moves you on an intuitive level. Often, the ideas that resonate are the ones that are most unusual, counterintuitive, interesting, or potentially useful. Don’t make it an analytical decision, and don’t worry about why exactly it resonates—just look inside for a feeling of pleasure, curiosity, wonder, or excitement, and let that be your signal for when it’s time to capture a passage, an image, a quote, or a fact.

The best way to organize your notes is to organize for action, according to the active projects you are working on right now. Consider new information in terms of its utility, asking, “How is this going to help me move forward one of my current projects?”

Organizing for action gives you a sense of tremendous clarity, because you know that everything you’re keeping actually has a purpose. You know that it aligns with your goals and priorities. Instead of organizing being an obstacle to your productivity, it becomes a contributor to it.

Every time you take a note, ask yourself, “How can I make this as useful as possible for my future self?” That question will lead you to annotate the words and phrases that explain why you saved a note, what you were thinking, and what exactly caught your attention.

Your notes will be useless if you can’t decipher them in the future, or if they’re so long that you don’t even try. Think of yourself not just as a taker of notes, but as a giver of notes—you are giving your future self the gift of knowledge that is easy to find and understand.

Express: Show Your Work All the previous steps—capturing, organizing, and distilling—are geared toward one ultimate purpose: sharing your own ideas, your own...

It’s so easy to endlessly delay and postpone the experiences that would so enrich our lives. We think we’re not ready. We fear we’re not prepared. We cannot stand the thought that there is one little piece of information we’re missing that, if we had it, would make all the difference.

This is why I recommend you shift as much of your time and effort as possible from consuming to creating.V We all naturally have a desire to create—to bring to life something good, true, or beautiful.9 It’s a part of our essential nature. Creating new things is not only one of the most deeply fulfilling things we can do, it can also have a positive impact on others—by inspiring, entertaining, or educating them.

Just as with the food we put into our bodies, it is our responsibility and right to choose our information diet. It’s up to us to decide what information is good for us, what we want more of and less of, and ultimately, what we do with it. You are what you consume, and that applies just as much to information as to nutrition.

Think about your favorite athlete, musician, or actor. Behind the scenes of their public persona, there is a process they follow for regularly turning new ideas into creative output. The same goes for inventors, engineers, and effective leaders. Innovation and impact don’t happen by accident or chance. Creativity depends on a creative process.

In the digital world we live in, knowledge most often shows up as “content”—snippets of text, screenshots, bookmarked articles, podcasts, or other kinds of media. This includes the content you gather from outside sources but also the content you create as you compose emails, draw up project plans, brainstorm ideas, and journal your own thoughts.

A knowledge asset is anything that can be used in the future to solve a problem, save time, illuminate a concept, or learn from past experience.

starts with realizing that in any piece of content, the value is not evenly distributed. There are always certain parts that are especially interesting, helpful, or valuable to you. When you realize this, the answer is obvious. You can extract only the most salient, relevant, rich material and save it as a succinct note.

Capture Criteria #1: Does It Inspire Me?

Capture Criteria #2: Is It Useful?

Capture Criteria #3: Is It Personal? One of the most valuable kinds of information to keep is personal information—your own thoughts, reflections, memories, and mementos. Like the age-old practice of journaling or keeping a diary, we can use notetaking to document our lives and better understand how we became who we are.

Capture Criteria #4: Is It Surprising?

you’re not surprised, then you already knew it at some level, so why take note of it? Surprise is an excellent barometer for information that doesn’t fit neatly into our existing understanding, which means it has the potential to change how we think.

Sometimes you come across an idea that is neither inspiring, personal, nor obviously useful, but there is something surprising about it. You may not be able to put your finger on why, but it conflicts with your existing point of view in a way that makes your brain perk up and pay attention. Those are the ideas you should capture.

Ultimately, Capture What Resonates

It’s a good idea to capture key information about the source of a note, such as the original web page address, the title of the piece, the author or publisher, and the date it was published.III Many capture tools are even able to identify and save this information automatically. Also, it’s often helpful to capture chapter titles, headings, and bullet-point lists, since they add structure to your notes and represent distillation already performed by the author on your behalf.

First, you are much more likely to remember information you’ve written down in your own words. Known as the “Generation Effect,”10 researchers have found that when people actively generate a series of words, such as by speaking or writing, more parts of their brain are activated when compared to simply reading the same words. Writing things down is a way of “rehearsing” those ideas, like practicing a dance routine or shooting hoops, which makes them far more likely to stick.

There is even significant evidence that expressing our thoughts in writing can lead to benefits for our health and well-being.11 One of the most cited psychology papers of the 1990s found that “translating emotional events into words leads to profound social, psychological, and neural changes.”

Notetaking is the easiest and simplest way of externalizing our thinking. It requires no special skill, is private by default, and can be performed anytime and anywhere. Once our thoughts are outside our head, we can examine them, play with them, and make them better. It’s like a shortcut to realizing the full potential of the thoughts flowing through our minds.

Consider how much time we spend designing and arranging our physical environment. We buy nice furniture, deliberate for weeks over the color of our walls, and fiddle with the placement of plants and books. We know that the details of lighting, temperature, and the layout of a space dramatically affect how we feel and think. There’s a name for this phenomenon: the Cathedral Effect.