Hey! I’m Karla Starr—Behavioral scientist. Author. Hypercurious ADHD-haver.

From my brain to your pixels to your brain—writing is like magic 😮

I was born in Buffalo, New York at 5am on a Monday at some point in the past; now, I’m typing this from a warm desk in my brother’s condo in Portland, Oregon. My first book, Can You Learn to Be Lucky?, was a Fast Company best book of the year; I wrote my second book with Chip Heath, who wrote Made to Stick and Switch. I came up with the title: Making Numbers Count.

I spent the first part of this Substack’s life bitching about self-help advice and life in general. Then I purchased real estate and went offline for two years. Now that I’m getting ready to write another book, I’m adding a “helpful” layer to the whole thing. I learned a lot about myself — and my work — while working with Chip, including the fact that my “squirrels on crack” brain needs frameworks and systems to make sense of everything.

I map real-life systems and create to find sense, meaning, clarity, and momentum in this chaotic world.

The first step in any change is to make sense of what you’re working with — an honest self-appraisal. Currently running The Experiment: using my life as a case study for seeing what’s actually happening beneath the story. Not here to fix you. Just here to show you what you’re actually working within. Spoiler alert: it’s weird. But oh-so fun.


You’re alive, dammit. So read something that’s clearly not written by ChatGPT.

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Author of MAKING NUMBERS COUNT & CAN YOU LEARN TO BE LUCKY? Behavioral scientist Relaunching Substack in 2026. Running a series of experiments on my own life.