Financial Optionality: My Method for More Flexibility in Everyday LifeFinancial Optionality: My Method for More Flexibility in Everyday Life

Nassim Taleb has a concept I initially dismissed — and then couldn’t shake: Antifragility.

Not fragile (breaks under pressure), not robust (withstands pressure), but antifragile: gets stronger through pressure.

His advice for individuals is direct: don’t get rich. Get robust. Build options, not luxuries. The freedom to say no — that’s real wealth.

I call this financial optionality.

What Optionality Means

Optionality means: you have choices.

Not the dream job, when you have no buffer and depend completely on your salary. Not saying no to unreasonable overtime, when you have no financial room to maneuver.

Optionality means: I could turn that down. I could take that risk. I could take six months to build something new.

That creates psychological space. And psychological space is the difference between a life you shape and a life that happens to you.

My 3-Step Approach

This isn’t a theoretical model. It’s what I’ve actually built — as a civil servant with a family and no massive inheritance.

Step 1: The Safety Buffer

Three to six months’ salary in a savings account. Not invested, not tied up. Just sitting there.

That’s not a great return. That’s sleep quality. This buffer means: if my car breaks down, I don’t need to take on debt. If I’m sick for a month, I’m not immediately in trouble.

Without this buffer, every investment is emotionally loaded. You can’t invest calmly when you might need to withdraw money at any moment.

In practice: I use a straightforward savings account for this buffer. Trade Republic currently offers good interest rates — open an account here.

Step 2: The Savings Rate

Once the buffer is in place, a fixed amount flows every month into an ETF savings plan.

Not “when I have something left over.” Automatically, on the 1st of the month, before I see anything else. This is called Pay-Yourself-First — and it’s the most effective financial habit I’ve ever built.

My focus: MSCI World. Broadly diversified, low costs, no active decisions required.

The savings plan also runs through Trade Republic — commission-free, from €1, fully automatable. Set up a savings plan.

Step 3: Passive Income Streams

Only once steps 1 and 2 are running do I look at ways to diversify returns.

One building block is P2P lending. I use Bondora Go & Grow for part of my portfolio. Why? Because it’s liquid and behaves somewhat independently of the stock market.

This doesn’t replace the ETF savings plan. It’s a complementary component — with its own risk profile.

Important: P2P lending is riskier than ETFs. I only invest money here that I could lose in the worst case. And it’s just one part of my overall portfolio.

What Optionality Is Not

Optionality isn’t an excuse to never take risks.

I waited a long time for “everything to be perfect.” Until the buffer was big enough. Until the savings rate was higher. Until, until, until.

That’s the other trap. Taleb calls this “naive antifragility”: being so cautious that you never get into a position to benefit from opportunities.

My approach: Step 1 is negotiable in size, Step 2 is not. I invest every month — no matter what. The amount can be small. But it must flow.

Why I’m Writing This

Not because I’m a financial expert. I’m not.

But because I spent a long time looking for an approach that fits my life. Not a full-time investor philosophy. No “get rich in 5 years” promises. Just: becoming more robust without turning your life upside down.

This is my current state. I keep building. And I share what works — and what doesn’t.

If you’re interested in the concrete numbers and my current portfolio setup, also check out: My Four Building Blocks for €500 Monthly Passive Income.

— Daniel