The first 4-minute mile was run in 1954 by Roger Bannister. At that time the barrier had created so much mystique that many considered it an impossibility. Once Bannister did it however, John Landy also achieved it the very next month, and over the next few years almost a dozen runners managed to do the same.
It’s almost as if it had to be proven to everyone to be possible before they believed it themselves and could finally do it. That’s the power of limiting beliefs, and a great example of how our beliefs control what our body can and can’t achieve.
Words like “impossible” and “can’t” are viruses, we all catch them at one time or another, but it’s important to kill them off as soon as we can so that they don’t cripple us by setting up mental barriers to our full potential!