Many people have experienced the sweetness of trading, but few can achieve long-term stable profits. The gap seems large, but it actually comes down to just two things—reproducibility and consistency.

**Reproducibility: Turning luck into a system**

Accidental profits often stem from luck or hitting the right timing. But what about stable profits? You must have a trading system that can consistently generate a positive expected value. This system is not a vague "feel" but a set of concrete rules with clear entry conditions, exit strategies, and risk management mechanisms.

How to achieve reproducibility? Focus on three points:

First, turn "intuition" into rules. Instead of saying "I feel it will go up," write rules like "Only buy when breaking the 20-day high with trading volume more than double"—this is systematic thinking.

Second, let data speak. Validate your system with at least 100 historical trades to see if it maintains a positive expected value in bull, bear, and sideways markets.

Third, every trade must have an explanation. Why did you make a profit or a loss? Be clear about it, rather than blaming "bad luck."

When every profit comes from your system rather than luck, the door to stable profitability is half open.

**Consistency: The test of execution**

Having a system with a positive expected value is fundamental, but most people, even if they master the system, still cannot make money consistently. The reason is simple—poor execution. Knowing and doing are separated by the consistency of execution. This is the real test.