I just realized that many new traders don't really understand what PnL is. And that's a bigger problem than it seems.

Look, PnL (Profit and Loss, or ganancia y pérdida in Spanish) is simply your result in numbers. How much you gained or lost in a trade, in a day, in a month. It sounds basic, but here’s the important part: without understanding your PnL, you have no idea how you're really doing in trading.

Most amateur traders only watch the price go up or down. They see movement and think that's all there is. But professional trading is different. It’s about what your PnL really is, measuring your performance with concrete numbers, not hope.

That’s why controlling your PnL is absolutely key. It’s not just a pretty number to look at. It’s your compass. It tells you if your strategy works, if you're taking appropriate risks, if you need to make adjustments. Without it, you're betting blindly.

And here’s the truth that separates winners from losers: it’s not about winning all the time. That’s impossible, and anyone who tells you otherwise is lying. It’s about making sure your profits exceed your losses in the long run. That’s the real game of trading.

The difference between a professional trader and one who loses money quickly is risk management. Learning to control your losses, understanding your PnL, adjusting your position accordingly. That’s what matters. That’s why many traders fail in the first few months: they never learned to read or respect their own PnL.