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Diarmaid McMenamin

Diarmaid McMenamin

Helping busy, time-poor professionals build a life of time and financial freedom by improving financial education and investing in property.

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Do You Know The Number That Really Drives Your Wealth?

7 min readJan 7, 2026
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Photo by Richard Multimedia on Unsplash

On Monday, we went through what a payslip actually means.

Have you ever looked at your salary and thought it seemed good, but still felt like you never have enough to build real wealth?

That’s because your salary can be misleading. The number on your payslip might look impressive, but after everything is deducted, it’s hard to invest enough to reach your goals.

The real number that matters is the gap between your net income and your expenses. This gap is what decides if you can escape the rat race. Your salary might look good, but it’s not the full story.

In this post, I’ll show you how to grow that gap and start building real wealth.

The Scribe Who Became the Richest Man in Babylon

Back in ancient Babylon, around 2000 BC, there was a scribe named Arkad. His story became well-known thanks to George S. Clason’s 1926 book, The Richest Man in Babylon. Many high earners today still haven’t learned the lessons from this book. Arkad earned the same as the other scribes. He wasn’t different from them. While some colleagues spent all their money on robes, feasts, and trying to keep up with merchants, Arkad made a choice that changed his life and his family’s future.

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Diarmaid McMenamin
Diarmaid McMenamin

Written by Diarmaid McMenamin

Helping busy, time-poor professionals build a life of time and financial freedom by improving financial education and investing in property.