According to ChainCatcher, trader Eugene Ng Ah Sio posted on social media about the three qualities that a good trader should possess:

1. Have a keen sense of emotion, recognize psychological bias and choose to stay away from the screen;

2. Build a sound risk management framework so that the trading system can withstand 2/3/4 standard deviation events;

3. Increase aggression through bet sizing and assess whether position sizing is reasonable when betting with high confidence.

2/3/4 standard deviation is used to assess asset price volatility, helping traders identify trading opportunities, risk management, and market anomalies.