Homeward bound after unloading its cargo, a ship ran into a violent storm in the middle of a vast ocean. The seamen were thrown into a panic. Without hesitation, the old but seasoned captain ordered water be poured into the hold immediately. "A mad man, isn't he? He is going to bring his own destruction by filling water into the hold and making the ship go down", grumbled a young sailor.
Noticing the captain's stern look, the sailors reluctantly carried out his order. With the water coming up in the hold and the ship going down inch by inch, the threatening of the violent storm to the ship gradually subsided and the ship started to stablize.
The captain said to the relieved sailors: "A million ton" ship seldom turns over; it's often the small ships that sank easily. It's safest when a ship is with load, and the most dangerous when without."
This is called the "pressure effect". The man who always muddles through in his work will easily be frustrated in a competitive society just like an unloaded ship that will turned over easily in a storm.