Elephants

Once passing by the elephants in the zoo, I suddenly stopped, surprised that such huge creatures, like elephants, kept in the zoo tied with a thin rope to their front foot. No chains, no cells. It was obvious that elephants can easily break free of the rope with which they are tied, but for some reason, they do not.
I approached the trainer and asked him why such majestic and beautiful animals just stand and make no attempt to free themselves. He replied: “When they were young and much smaller in size than they are now, we tied them with the same rope, and now when they are adults, it’s enough to hold them with the same rope. Growing up, they believe that this rope will be able to hold them and they are not trying to escape. ”
It was amazing. These animals could at any moment get rid of their “shackles”, but due to the fact that they believed that they could not, they stood there forever, not trying to free themselves.
How are these elephants, how many of us believe that we can’t do anything just because it didn’t work once?