Before buying my first rental property, I spent weeks running projections.

The numbers looked great on paper.

Monthly rent covered the mortgage. Cash flow appeared healthy. Appreciation looked promising. Everything suggested a straightforward path to passive income.

Reality had other plans.

Within the first year, I encountered maintenance expenses, insurance increases, turnover costs, and several surprises that never made it into my original spreadsheet.

The biggest lesson wasn't that the property underperformed—it was that successful investing requires planning for the unexpected.

What saved the investment was maintaining strong cash reserves and focusing on long-term performance rather than monthly fluctuations.

Looking back, the property still delivered solid returns. But the actual numbers were very different from the perfect projections I started with.

The best investment models don't predict success.

They prepare you for reality.