The 4 minute mile was considered impossible until Roger Bannister ran it. Once he did, many followed suit.
For more than half a century, finishing a marathon in less than 2 hours was considered an insurmountable barrier. This weekend, Eliud Kipchoge did a Roger Bannister and proved that it can be done.
While it remains to be seen if his achievement will have the same effect on marathon runners as Roger Bannister did, it did make me wonder about how often we limit ourselves by setting arbitrary mental limits on how much we can do.
It probably happens more often than we think.
