This popular phrase was made famous on the London Underground. If you use the Tube for your commute every day, you probably hear the words "Mind the Gap" many times each day, possibly every time your train stops at a station.

It's a pretty simple phrase and we all know what it means - reminding passengers to watch out for the gap between the train and the platform on the Underground, which to be fair can be quite big sometimes.

The origins of "Mind the Gap" on the London Underground dates back to 1968. It came about all because it was discovered that an automated message made much more practical sense than station attendants and drivers having to warn passengers all the time.

If you have ever travelled on the London Underground you will undoubtedly have heard it.

There is another meaning for this phrase in my own dictionary and all because I am reading a book titled the Gap and the Gain, co-authored by Dan Sullivan and Dr Benjamin Hardy. It claims to be the High Achiever's Guide to Happiness, Confidence and Success. I'm not 100% sure about that massive claim, but it has changed my thinking considerably.