The One Thing Book

The ONE Thing - The Surprisingly Simple Truth Behind Extraordinary Results

August 01, 20265 min read

My calendar was full. My to-do list never ended. I was juggling clients, content, meetings, ideas, side projects, and a million tabs open in my brain. And somehow... I still felt behind.

I thought the answer was to work harder.

Wake up earlier. Learn more. Do more.

Turns out, I wasn't lacking effort. I was lacking focus.

That is exactly why The ONE Thing by Gary Keller and Jay Papasan left such a lasting impression on me.

This was one of those books that mentors and business coaches kept recommending over and over again. Ironically, finding a copy felt harder than applying its lessons. But once I finally got my hands on it, I understood why so many successful entrepreneurs swear by it. And if you are one of my clients or VAs that I have been coaching, you probably heard me blabbing about this book on our strategy or coaching sessions.

To this day, it still sits on my top shelf as my top favorite beside Start With Why, Can't Hurt Me, and The Subtle Art of Not Giving a F*ck.

Not because it has the most complicated framework. Quite the opposite actually. Because it had the courage to build an entire book around one simple question.

"What's the ONE Thing I can do such that by doing it, everything else will be easier or unnecessary?"

Simple. Almost annoyingly simple. Yet incredibly powerful.


One idea. A thousand applications.

What I love most about this book is that it doesn't try to impress you with fifty productivity hacks or a never-ending checklist of habits.

It picks one idea.

Then spends the rest of the book convincing you why mastering that one idea can change everything.

In a world obsessed with doing more… Gary Keller argues for doing less, but doing what matters most. And honestly? That completely challenged how I approached work.

As founders, we're constantly told to hustle.

Build the website.

Post on every platform.

Reply to every email.

Launch another offer.

Start another project.

Network more.

Learn another skill.

Before you know it, you're working twelve-hour days… Yet wondering why you're still not making the progress you expected.

The ONE Thing forced me to ask a much better question.

Instead of asking: "What else should I add?"

I started asking: "What deserves my attention the most?"

That shift alone changed how I plan my weeks, my business, and even my personal goals.


Busy is not productive.

One of the biggest myths Keller challenges is multitasking. He doesn't just say multitasking is ineffective. He argues it's a lie.

Because every time we switch between tasks, our brain pays a price.

Attention gets divided.

Momentum disappears.

Quality suffers.

Reading that immediately reminded me of another awesome book I’ve read, Deep Work by Cal Newport. Different books. Same truth.

Protect your attention. Because attention is your most valuable asset.

As a marketer, this lesson hits especially hard. Marketing today rewards constant activity.

Post more. Comment more. Reply faster. Be everywhere.

But building a remarkable brand? That doesn't happen because you're constantly busy. It happens because you're consistently focused. There's a huge difference.


Success shrinks before it grows.

Another lesson I loved is Keller's idea of going small. Most of us think bigger goals require bigger plans.

Bigger teams. Bigger strategies. Bigger to-do lists.

But he argues the opposite. If you want extraordinary results...

Shrink your focus.

Find the domino. The one action that knocks over the next one. And the next.

And the next.

That idea completely changed how I approach strategy sessions with my clients.

People often come to me wanting to fix everything.

Their branding. Their website. Their content. Their funnel. Their social media. Their messaging. Everything!

But after reading this book, I became even more convinced that the best strategy isn't fixing ten things at once.

It's identifying the one thing that's creating the biggest bottleneck.

Sometimes that's positioning. Sometimes it's brand clarity. Sometimes it's messaging.

Fix the right thing… And everything else suddenly becomes easier.

That's exactly how dominoes work.


Success is built through priorities, not pressure.

One thing I appreciate about this book is that it gives you permission to stop trying to be everything to everyone.

You don't have to win every day in every category.

You don't have to finish your entire to-do list before you deserve to rest.

You don't have to chase every opportunity.

You simply need to know what's most important right now.

As someone juggling multiple businesses, motherhood, writing, advocacy, and life… that reminder matters. Because the hardest part isn't usually working hard. The hardest part is choosing what deserves your best energy.

Then everything else becomes noise.


The Stoic connection I couldn't ignore.

The more I study Stoicism, the more I notice the same ideas appearing in completely different books.

Marcus Aurelius never talked about productivity apps. But he constantly wrote about directing your attention toward what truly matters. Epictetus reminded us not to waste energy on things outside our control.

The ONE Thing echoes that same philosophy. Not by talking about ancient wisdom… but by asking us to intentionally choose where our focus belongs.

To me, that's more than productivity. That's discipline. That's leadership. That's self-respect.


What stayed with me.

After reading this book, I still come back to that one question.

Whenever I feel overwhelmed...

Whenever my calendar starts overflowing...

Whenever I catch myself trying to do everything...

I stop.

And I ask:

What's the ONE Thing I can do right now that makes everything else easier or unnecessary?

It's amazing how often the answer isn't another task. It's clarity. This book didn't teach me how to become busier. It taught me how to become intentional.

And I honestly believe that's one of the biggest differences between people who stay busy...and people who build something meaningful.

If you're a founder, entrepreneur, creator, or simply someone trying to make progress in life… I'd encourage you to ask yourself the same question.

Not tomorrow. Today.

Because maybe the life you're trying to build isn't waiting for you to do more.

Maybe it's waiting for you to finally decide...

What's your ONE Thing?


Maria Ramirez

Maria Ramirez

Maria Ramirez is a multifaceted founder, writer, marketing strategist, mom, cancer warrior, and lifelong learner. She writes about entrepreneurship, mindset, motherhood, living with cancer and shares the real-life journey of building businesses and life that you want. Her work bridges strategy and life, offering grounded insights for founders on staying true to who you are while building what matters.

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