Read on About the Elephant and the Rope.
As my friend was passing the elephants, he suddenly stopped, confused by the fact that these huge creatures were being held by only a small rope tied to their front leg. No chains, no cages. It was obvious that the elephants could, at any time, break away from the ropes they were tied to but for some reason, they did not. My friend saw a trainer nearby and asked why these beautiful, magnificent animals just stood there and made no attempt to get away.
“Well,” he said, “when they are very young and much smaller, we use the same size of rope to tie them and, at that age, it’s enough to hold them. As they grow up, they are conditioned to believe they cannot break away. They believe the rope can still hold them, so they never try to break free.” My friend was amazed. These animals could at any time break free from their bonds but because they believed they couldn’t, they were stuck right where they were.
Very powerful story with an equally powerful message.