The key to successful investing lies in the insight into the underlying value of assets and a deep understanding of complex factors such as macroeconomic cycles, monetary policy, and national policies. Without these understandings, even the most beautiful dreams are nothing but castles in the air.

Therefore, don't be fooled by simple theories on the surface. If you find that you can't stick to long-term investments, or even for a week, then you might as well use the funds for self-investment instead of wasting them on those doomed attempts.