We put thirty spokes together and call it a wheel;
But it is on the space where there is nothing that the usefulness of the wheel depends.
We turn clay to make a vessel;
But it is on the space where there is nothing that the usefulness of the vessel depends.
We pierce doors and windows to make a house;
And it is on these spaces where there is nothing that the usefulness of the house depends.
Therefore just as we take advantage of what is, we should recognize the usefulness of what is not.
-Tao Te Ching, chapter 11 by Lao Tzu
In the West emptiness is something to be filled or avoided. If a glass is empty it should be filled and if you are empty inside it means, that your life is full of superficiality, which leaves you feeling empty the way food makes you feel empty, that has no nutritional value.
The Tao paints a very different picture of emptiness. The world could not exist without this emptiness. What emptiness do you have in your life without which you could not exist?