💸 Lessons I Had to Learn the Hard Way (Early 20s Money Mistakes)

Flannery Dziedzic

Feb 1 • General discussion

I always joke that I have to learn things the hard way… and money was no exception.

Growing up, my mom was deep into Dave Ramsey. I vividly remember the envelope budgeting system.

“No credit cards. No loans. Only use the money you have.”

And if you’re already in debt?

“Beans and rice. Rice and beans.”

I heard this stuff constantly. Car rides. At home. Even as part of my “schoolwork.”

So you’d think it would’ve sunk in.

And yet… somehow, in my early 20s, I still managed to rack up about $15,000 in bad debt.

Here’s how it happened.

I had just joined the military, and my pay kept getting messed up in the system. My monthly paycheck—already modest, but enough to cover rent, my car payment, groceries, and basic bills—was often 2–3 months late.

I burned through what little savings I had.

Then I started using credit cards to cover the gaps… and some wants too, if I’m being honest.

It felt like I blinked—and suddenly I was drowning.

By the time my pay was finally fixed, I was already in too deep. The interest alone was basically my minimum payment.

That’s when it clicked for me:

It’s not enough to just say “don’t touch credit cards.”

You have to understand why.

So if you’re younger—or advising someone who is—please hear this from someone who made the mistake and wants to help you avoid it, if you can.

📉 Why Credit Card Debt Is So Dangerous

Credit card interest accumulates daily.

If you don’t pay the balance off every month, you’re typically getting hit with 20–30% APR.

Yes, you might be able to make that $41 minimum payment…

but very little (sometimes none) of that is actually reducing the balance.

Most of it is just feeding the interest machine.

💳 Credit Isn’t Evil—But It Has Rules

Credit can be useful if you use it correctly:

Travel points
Cash back (like 3–5% on certain purchases)
Purchase protections

But only if you pay it off before interest kicks in.

Once you carry a balance, the math flips against you—fast.

🧮 The Rule of 72 (This Changed Everything for Me)

Here’s a simple way to understand how money (and debt) really works.

The Rule of 72:

Divide 72 by the interest rate to see how long it takes money to double.

Checking account (~1%)72 ÷ 1 = 72 years to double your money
High-yield savings (~4%)72 ÷ 4 = 18 years to double your money

Now look at debt:

Credit card at 18%72 ÷ 18 = 4 years for your debt to double
Credit card at 30%72 ÷ 30 = 2.4 years for your debt to double 😬

So while banks pay you pennies to hold your cash…

they charge you rocket fuel rates when you borrow theirs.

💥 A Real Example

Let’s say you max out a $5,000 credit card at around 30% APR.

That’s roughly:

$125 per month
$1,500 per year

👉 In interest alone.

Before you even touch the principal.

That’s money gone forever—no asset, no return, no upside.

🧠 The Takeaway

I don’t share this to shame my younger self—or anyone else.

I share it because understanding the math changes behavior.

Credit isn’t the enemy.

Ignorance of how it works is.

If this helps even one person avoid learning the hard way like I did, it’s worth sharing.

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