You shouldn't be a prisoner of your own ideas.
In conceptual art the idea or concept is the most important aspect of the work
What the work of art looks like isn't too important. It has to look like something if it has a physical form. No matter what form it may finally have it must begin with an idea. It is the process of conception and realization with which the artist is concerned.
The idea becomes a machine that makes the art.
Artists of many diverse types began using simple forms to their own ends.
Once it is out of his hand the artist has no control over the way a viewer will perceive the work. Different people will understand the same thing in a different way.