'Doing nothing is better than being busy doing nothing.'
(Another quote attributed to Lao Tzu )
Here's the caveat: the mind is always up to something and never doing nothing!
What then was Lao Tzu getting at? Perhaps this: when we stop being busy doing nothing (or even busy doing something) we can start to do a different kind of nothing, we can be still and observe the mind.
This kind of doing nothing is really something!