Famous magician and escape artist Harry Houdini claimed he could escape any jail cell in less than an hour. One day, a small town in Britain built a new jail cell and they were proud of it. They invited Houdini to come test it, and he agreed.
He walked into the prison cell full of confidence. After all, he had done this hundreds of times before.
Once the jail cell was closed, Houdini took off his coat and went to work. From his belt, he got a flexible but tough piece of steel that he used as a lock pick. He knelt in front of the door and started working on the lock.
He quickly discovered that something was unusual about this particular lock. For 30 minutes he worked and got nowhere. And his confident expression disappeared.
At the end of an hour, he was soaked with perspiration. He tried all the tricks of his trade but nothing worked.
After two hours and totally exhausted, Houdini literally collapsed against the door. And the force of his weight was enough to push the door open.
Because in reality, the door had never been locked. By accident the new jailers never locked the door.
It was locked only in one place, in his own mind.
The lesson: Whatever your mind says is locked---is locked.