From Not Always So, by Shunryu Suzuki, Everyday Life is Like a Movie:

When you are practicing, you realize that your mind is like a screen. If the screen is colorful, colorful enough to attract people, then it will not serve its purpose. So to have a screen which is not colorful – to have a pure, plain white screen – is the most important point. But most people are not interested in a pure white screen.

Do you start with a blank screen? Or is it so colorful and cluttered that any attempt to put something new on it just gets lost in the jumble?