Your mind is like a reporter, only the most biased reporter is more objective than your mind.

Your mind colors everything. As an example, when you listen to the presidential pre-election news in the U.S., when you are a staunch Republican, you listen one way, and when you are a staunch Democrat, you listen another way. Whom you are for makes a phenomenal difference to how you think. If you are for one or the other, you don't even want to hear what the other side has to say.