The most important thing to cultivate in trading is mindset - don't let the fluctuations of K-lines dictate your emotions. When the market is surging, don't rush to chase the highs; that could be a trap set by the main players. When the market is crashing, don't panic and sell off; panic selling often happens at the bottom price. True traders know to stay vigilant during the euphoria and seek opportunities in despair, engraving 'I am fearful when others are greedy, I am greedy when others are fearful' into the marrow of their trading.