In a training course I have several times "asked" participants with a game like this. I show you some black objects. Then I asked them, "what color is this?". "Black", they replied. And I do that over and over again. Then I asked, "how long does bed bat?". They say "Night" !!!. Ha ha ha ha. It's a copycoge! Lha wong bats were sleeping late afternoon.
How come? Yes it was because I embedded black program repeatedly so that it goes to their subconscious. So that the associated appear in their minds is a dark night.
The question is, what we often repeat in life? If we repeat the words, good thinking then it will be a good belief. And conversely, if repeated it is bad, it will be a belief that inhibits our own lives.