I've been involved in trading for a while, and I want to share something that many beginners don't understand at first: PnL is literally your best ally or your worst enemy, depending on how you look at it.

Look, PnL in trading is nothing more than your Profit and Loss in numbers. It sounds simple, but that's where many get lost. Some traders don't even check this regularly and then wonder why their accounts aren't growing.

The interesting thing is that the meaning of PnL goes beyond just seeing if you made or lost money on a trade. It's your mirror. It shows you exactly how you're trading, whether your strategy works or if you're improvising.

I've seen traders obsessed with winning every trade. That's a mistake. The reality is that what really matters is that your accumulated gains exceed your losses in the long run. A professional trader can have a 40% losing trade rate and still be profitable. Why? Because they understand what PnL in trading means: smart risk management.

Without regularly reviewing your PnL, honestly, you're just gambling. There's no strategy, no discipline, just luck. And luck is not a plan.

My advice: review your PnL regularly, learn from each trade, adjust what doesn't work. The difference between an amateur trader and a professional is exactly there, in that discipline of understanding and controlling every move. That’s what truly separates winners from losers.