使用了具象化的抽象概念，通过invisible glass这一意象直观地描述了难以察觉的心理限制。
"Big fish eat small fish" is a common law of nature; however, scientists obtained the opposite conclusion through a unique experiment:
They divided a large fish tank into two halves with a glass partition. First, they placed a large fish in one half and did not feed it for several consecutive days to keep it hungry. Then, they placed many small fish in the other half. When the large fish saw the small fish, it swam directly toward them. However, unaware of the glass in between, it bumped into the glass and was pushed back. The second time, it used all its strength to charge at the small fish, but the result was the same. This time, it was bruised and swollen, enduring intense pain. Consequently, it gave up on the seemingly accessible food and stopped trying.
The next day, the scientists removed the glass partition. The small fish leisurely swam to the front of the large fish. At this point, the large fish no longer had the desire to eat the small fish; it simply watched them swim back and forth in front of it...
Many people also have an invisible "glass" in their minds. It prevents them from boldly expressing their views or causes them to adopt a fearful attitude like "once bitten, twice shy" when facing setbacks. To achieve success, one must continuously break this "glass" in their mind and overcome these invisible obstacles!
“大鱼吃小鱼”是大自然中常见的规律，然而科学家通过一项特别的实验，却得出了相反的结论：
他们用一块玻璃将一个巨大的鱼缸分隔成两半。首先，在鱼缸的一侧放入一条大鱼，并连续几天不喂食，使其处于饥饿状态。随后，在另一半鱼缸里放入许多小鱼。当大鱼看到小鱼时，它立刻径直向小鱼游去，但它没有意识到中间隔着玻璃，因此撞到了玻璃上被弹回。第二次，它使出了全身力气冲向小鱼，结果依旧失败，这次它被撞得鼻青脸肿，疼痛难忍。于是，它放弃了眼前看似唾手可得的食物，不再尝试。
第二天，科学家抽掉了鱼缸中间的玻璃。小鱼们悠闲地游到大鱼面前，而此时的大鱼已经没有捕食小鱼的欲望了，它只是眼睁睁地看着小鱼在自己面前游来游去……
许多人的心灵中也存在着这种无形的“玻璃”。它让人不敢大胆表达自己的观点，或者在面对挫折时采取“一朝被蛇咬，十年怕井绳”的消极态度。一个人若要走向成功，就必须不断打碎心中这块“玻璃”，超越那些无形的障碍！