What does change is as good as a holiday mean?

Answer 1

What ever

Answer 2

{I can't give a textbook answer but I'll try and give an argumentative answer.}

There are two aspects of a holiday that come to mind when considering this expression.

1. A holiday is temporary and is usually over much too quickly and leaves one wanting more.
2. People tend to be much too busy when on holiday; so much so that they need a holiday after returning from holiday.

That being said the meaning could be summarized as follows:

A change - be it the car one drives, where one lives, where one works - and the pleasant novelty thereof is temporary and will fade sooner than one would like after which the desire for another change will inevitably develop.