I recently did an experiment. I allowed files and folders to accumulate on my computer for a month – just let them pile up without organizing anything. By the end of that month, I had 222 individual items scattered across my desktop and downloads folder. The accumulated files were genuinely diverse… Financial documents: personal tax…
In early 2023, after teaching 6,000 students over six years, I abruptly decided to stop teaching our Building a Second Brain cohorts. Even at that early stage, with the release of the first version of ChatGPT just a couple months earlier, it was clear to me the impact this new technology would have. Almost from…
You’re scrolling LinkedIn during a coffee break. A course creator you know just hit $100K in their first cohort. Another founder you know just closed a funding round. And a peer you met at a workshop got invited to speak at the conference you’ve been attending for years. “They’re so lucky,” you think, closing the…
I’m incredibly proud to share news that’s been two years in the making: my next book is coming on November 3, 2026! It’s called Life in Perspective, and it represents the culmination of a reflective practice I’ve been refining since 2008: the annual review. If you’ve read Building a Second Brain or The PARA Method,…
One of the most influential yet under-appreciated parts of how large language models work is something most people never see: the system prompt. This is the block of hidden instructions given to the model before it ever receives your input. It establishes the model’s tone, boundaries, and behaviors. You can’t change the system prompt, but…
I remember the exact moment I was radicalized about climate change. Standing on the front porch of our new home in Southern California in the summer of 2020, I watched the sky turn a burnt orange as wildfires blazed in the inland summer heat. The particles of smoke didn’t just fill the air—they filled our…
I spent 2 years serving as a Peace Corps volunteer in Eastern Ukraine from 2009 to 2011. I lived in the town of Kupyansk, a couple hours outside Kharkiv, near the Russian border. It was one of the greatest experiences of my life, teaching me so much about myself and life and the people and…
17 years ago, at the age of 22, I uploaded my first YouTube video. My high school friend Derick and I had set up a digital camcorder, faced the camera with our backs to his bedroom wall, hit record, and just started talking about 3D printing, which was to be the first episode in a…
Creativity is often described as an elusive, even magical, phenomenon. In reality, it’s a skill – and there are many ways to prime your brain to be more creative. Surprisingly, one of them is procrastination. We generally think of procrastination as a bad habit, a mental hurdle we need to overcome. But research shows that…
I recently announced my next major book project: a book on how to complete a year-end life review as a ritual for self-reflection and growth. I’ve had an annual review practice in some form since 2008, and I can’t think of anything else that has more dramatically impacted my life in that time. I can’t…
One of the aspects of writing a book I most looked forward to was releasing it in my family’s country of origin, Brazil. I’d spent years daydreaming about what that would feel like, returning to my homeland bearing the gift of hard-won knowledge to share with the people who had given me so much. Criando
I’m unbelievably proud to announce the inaugural Second Brain Summit, taking place October 3–4, 2024, in Los Angeles, California! We’re gathering the most dedicated experts and practitioners of personal knowledge management in the world’s creative capital with three goals in mind: To meet other like-minded people and see that we’re not alone To celebrate the…