The fundamental of investing has never been guessing ups and downs, gambling on emotions, or looking at short-term market trends, but rather being a long-term partner in the business.

Focus all your energy on the business model, corporate culture, moat, and profitability; if you can roughly estimate the free cash flow over the next ten years, you've already completed the most core part of investing.

Short-term market fluctuations are driven by emotions, capital, and speculation, with no规律, and are completely unpredictable.
Fools waste time on them, only causing internal conflict and chasing highs and lows.
A truly mature investment mindset is: understand the business, stick to the logic, ignore short-term volatility, and make money from the company's growth and intrinsic value, not from the mystical money of market emotions.