At 3 a.m., I received a message, and a reader complained: "Got the direction right, shorted and made 2000U, then rushed to take profits, but when adding to the position, I got wiped out directly. My 10,000 yuan principal is now only 3,000…"

Looking at this story, I’m not surprised at all—such plots happen every day in the crypto world. It may seem like bad luck, but in reality, it’s just a complete mess of operational logic.

Over the years, I’ve seen too many people who stay up all night staring at K-line charts. They get scared of missing out after a few points rise, go all-in after a few points drop, and their fingers cramp from clicking all day, yet their accounts keep declining. Trading derivatives is similar to gambling; the more frequently you operate, the faster you lose money.

Those who truly last in this industry never rely on "divine predictions," but on a complete set of rolling position discipline—turning one correct judgment into profits that allow you to relax.

**How exactly does rolling position work? First, clarify these three logics**

Many people understand rolling position as "frenzily adding more when in profit," which is a deadly idea. The real essence of rolling position boils down to three sentences:

**First: Capital is life, protect it at all costs.** Never go all-in with your entire chips. After making a profit on a trade, the first step is to withdraw the principal, so no matter how the market fluctuates afterward, your core is safe.

**Second: Profits generate more profits.** Don’t take out all the money you earn; instead, use only part of the profits to continue trading, letting the previous gains roll themselves. The advantage of this approach is that even if you suffer losses later, they only come out of the profits, not the principal.

**Third: Don’t waste bullets in oscillations.** Avoid frequent trades in choppy markets; only act when the overall trend is confirmed or key levels are broken. That’s the professional way.

Last year, when I traded ETH short positions, I fully applied these three principles.

**Real trading breakdown: How 10,000U rolled into 28,000U**

This was in early November last year…