Why risk management comes first
If you learn only one thing about trading, make it this: managing risk matters more than picking winners. Skilled traders are not the ones who are right most often — they are the ones who lose small when they are wrong and let their occasional wins add up. Anyone can be right sometimes; survival is what separates people who last from people who blow up.
The mathematics are unforgiving. If you lose 50% of your account, you then need a 100% gain just to get back to where you started. Large losses are far harder to recover from than they feel in the moment, which is exactly why avoiding them is the whole game.
Never risk money you can't afford to lose
This phrase is repeated so often that it has almost lost its meaning — so take it literally. The money you trade with should be money that, if it vanished completely tomorrow, would not affect your rent, your bills, your family, or your ability to sleep.
Never trade with borrowed money, credit cards, or funds set aside for something important. Emotional pressure from needing the money back is one of the fastest routes to bad decisions. Trading money should be genuinely spare — and for many people, honestly, that amount is zero, and that is a perfectly sensible answer.
Position sizing: how much to put on a trade
Position sizing is deciding how large each trade should be. It is the most powerful risk tool you have, and beginners almost always trade too big. The bigger your position, the more a small price move costs you — and the more likely a normal wobble in the market knocks you out or scares you into a bad decision.
The idea is to size each position so that even a losing trade only costs you a small, pre-decided slice of your account. You decide in advance how much you are willing to lose on a trade, and you size the trade to fit that number — not the other way around.
The stop-loss: your safety net
A stop-loss is an order you set in advance that automatically closes a trade if the price moves against you by a certain amount. It caps your loss on that trade so a single bad position cannot spiral out of control.
The key is to decide where your stop-loss goes before you enter the trade, while you are calm and objective. In the heat of a losing trade it is dangerously tempting to move your stop further away 'just to give it room' — which is really just deciding to lose more. A stop-loss only protects you if you respect it.
Be aware that stops are not perfect. In fast-moving markets a price can 'gap' past your stop, so you may lose more than planned. Stops reduce risk; they do not eliminate it. Nothing does.
The 1% idea
A widely used rule of thumb is to risk no more than about 1% of your trading account on any single trade. On a €1,000 account, that means arranging your position size and stop-loss so that a losing trade costs you around €10.
This sounds almost too cautious, and that is the point. Risking 1% means you could lose ten trades in a row and still have most of your account intact and your head clear. It turns a run of bad luck — which every trader has — from a catastrophe into a survivable bump.
The exact number is less important than the principle: cap your loss per trade to something small enough that no single trade, and no short losing streak, can seriously hurt you. Many beginners who fail do so simply because they risked too much per trade.
Leverage: a magnifier that cuts both ways
Many trading products offer leverage, which lets you control a large position with a small amount of money. It is marketed as a way to make bigger profits — but it magnifies losses exactly as much as it magnifies gains, and it is a leading reason beginners lose money quickly.
With high leverage, a small move against you can wipe out your deposit. Regulators repeatedly report that a large majority of retail traders lose money, and heavy leverage is a big part of why. As a beginner, treat leverage with real caution and keep it low or avoid it while you learn.