As a man was passing by the elephants in the wildlife park, he suddenly stopped, confused by the fact that these huge creatures were held captive by only a small rope tied to their leg. No chain, no cages. It was obvious that the elephants could, at any time, break away but for some reason, they didn't. He saw a trainer nearby and asked why the elephants just stood there and made no attempt to get-away.
"Well," the trainer said, "when they are young and much smaller in size, we use the same size rope to tie them, and at that age, it's enough to hold them. As they grow up, they are habituated to believe they can't break away. They believe the rope can still arrest them, so they never try to break free."
The man was amazed at how the elephants could at any time break free but because they believed they couldn't, they were stuck right where they were.
Exactly like the elephants,
How many of us go through life hanging onto a belief that we can't do something, simply because we failed at once before?
Failure is part of learning, we should never give up.