Warren Buffett’s small decision to tweak his $3 McDonald’s breakfast order based on the stock market’s daily performance shows how deeply frugality and market awareness shape his thinking. Even with Berkshire Hathaway sitting on over $300 billion in cash by 2025, he sticks to this habit. It’s not just about saving a few cents—it’s a sign of the discipline and emotional steadiness that have defined his legendary investing career. Historically, Buffett’s thrifty habits trace back to his early year