It's almost New Year's Eve. Wishing everyone a Happy New Year.

This period has seen a huge pullback, ranking among the top five since I started trading. The market is unpredictable and inscrutable—even with correct logic, there are ups and downs that are impossible to forecast.
Looking back at my trading records, I realize that the ones that truly cost me money are often not the assets I initially chose incorrectly, but those where—despite choosing the right direction, buying with the correct logic, and correctly identifying the trend—I decided to sell halfway through.
It's not that I can't pick the right assets, but that I can't hold on; it's not that I don't understand the trend, but that I can't withstand the volatility; it's not that I lack good opportunities, but that I sell too early. This is one of the cruelest aspects of investing: making a wrong move once results in losing part of your principal; selling too early often means missing out on long-term accumulated opportunity costs.
Many people are obsessed with studying "how to buy," but what impacts the results even more is "how to hold." Buying is more of a technical skill, while holding is more about human nature. The former can be improved through learning, but the latter often requires time to develop.