Focus can help you establish an advantage in competition, and this is especially valuable in life and investing. When you concentrate your energy on one thing, complex problems gradually become simpler, and repeated practice allows you to master the rules, ultimately enabling you to handle them with ease. But the cost is also obvious—high opportunity cost. Choosing one path means giving up other possibilities, and if you choose incorrectly, you may easily fall into a trap of waiting for opportunities to come to you.

Focus truly plays a role in scenarios where leveraging strengths and avoiding weaknesses is possible. Game theory is a typical example. In highly competitive fields like the stock market and trading markets, focused strategies are particularly practical. In essence, focus is a neutral survival strategy, proven everywhere in nature. Eagles focus on hunting birds and ground small animals, other birds eat insects or fruits, small fish eat shrimp, big fish eat small fish, sheep only eat grass and avoid other foods—each species survives through a single strategy.

But humans are different. Our evolutionary strategies are more complex and cannot rely on a single method for survival. This means that in trading, you need to find a balance between focus and flexibility. Over-concentrating on one currency or one approach may cause you to miss risks; being too scattered makes it hard to build competitiveness. True experts know when to focus and when to adjust.