The One Thing Book

The Main Thing is to Keep the Main Thing the Main Thing

October 09, 20253 min read

April 2022.

I had just quit my job.

My agency was sitting at $10K/month.

Not bad.

But not enough.

I gave myself 9 months to more than double it.

$25K/month by the end of the year.

That was the goal.

And I had one strategy.

Not a funnel.

Not ads.

Not some shiny new software.

Focus.

Laser-sharp, obsessive, tunnel-vision focus.

Every morning from 8 to noon, I shut out the world.

No Slack.

No email.

No client work.

No “quick updates.”

Just me, selling.

  • Cold outreach

  • Follow-ups

  • Sales calls

  • More follow-ups

If something didn’t move revenue forward, it got pushed to the afternoon.

Or night.

Or passed to my team.

The work still got done.

But sales came first.

Every. Single. Day.

And here’s what happened:

We didn't just hit that "impossible" $25,000 MRR goal...

We crushed it MONTHS early.

And by April 2023?

We were doing over $40K/month.

That's 4x growth in 12 months.

Not because I worked harder.

Not because I picked up some magic new strategy.

Because I focused like crazy on the one thing that mattered most:

Selling.

I look back at that year of massive growth and see a simple but powerful lesson:

The value of saying NO to almost everything so you can say YES to your one most important thing.

I was saying no to building websites myself.

I was saying no to doing SEO myself.

I was saying no to countless opportunities and distractions.

All so I could say a resounding YES to selling.

It didn’t just grow my business.

It changed my life.

I never had to go back to corporate.

Never had to update my résumé.

Never had to sit through another soul-sucking Zoom meeting where someone says “let’s circle back.”

All because I decided to follow this advice:

The main thing is to keep the main thing the main thing.

(Shoutout to Stephen Covey for that quote — it’s mural-worthy.)

When you identify your main thing, focus relentlessly on it, and ruthlessly eliminate distractions, you unleash explosive growth.

I just read The ONE Thing by Gary Keller.

The heart of the book is what Keller calls the focusing question:

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

That’s it.

That’s the game.

That question cuts through the noise.

It helps you find the highest-leverage move.

The one domino that knocks everything else down.

For me at that time, my ONE thing was sales.

By focusing intensely on sales:

  • It made building websites and doing SEO unnecessary (for me) because I could hire experts

  • It made growing my business easier because I had the funds to expand

  • It created momentum that flowed to every other area

This is how extraordinary results happen – not by doing MORE things, but by doing FEWER things with MASSIVE impact.

Most people think they can multitask effectively.

The research is crystal clear: they can't.

And neither can you.

Multitasking is a productivity killer.

Your brain isn't wired for it.

Instead:

  1. Focus on one task until completion

  2. Make that task your highest-leverage activity

  3. Use your limited willpower on your most important thing

  4. Build this focus into a success habit

You've heard of the Pareto Principle – 20% of effort produces 80% of results.

But you can take this even further.

Within that critical 20%, there's typically ONE THING that drives the majority of outcomes.

Find THAT, and you'll generate even more than 80% of your results from focusing on it.

So here's my challenge to you:

  1. What's your ONE thing today?

  2. Block 2-4 hours of PROTECTED time to work on it

  3. Let everything else fit around it

This is called "working on your big rocks first" – and it's the simplest strategy I know for creating extraordinary results.

I'd love to hear what you're focusing on right now.

What's your ONE thing?

Hit reply and let me know – I'll help any way I can.

Focus fiercely,

Zack

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