No. You do not choose what to believe you cannot do that.
I think you have been told that before?
You do choose and what proves it, is the amount of arguments you produce from the people you have learned the information from which you based your choices on.
Most arguments produced are from people like Dawkins, Sam Harris, and the lady whose name escapes me who died. You have nothing of yourself for your decisions just repeat what you have learned from others and reasoned to make your choice.
Flying teapots and all the other silly remarks made by people shows a decision made by the self.