I don't think that beliefs are chosen. To me, in order for there to be a "choice" there has to be at least two equally plausible beliefs to choose from and you could choose either honestly. If your logic and reasoning abilities do not find an option as plausible, then one cannot logically bring themselves to believe it. It's like if two people are describing something to you and one says that the dog sprouted wings and flew over the 10ft fence and the other said that the dog jumped up boxes to get over the fence. If choice was involved, you could choose to believe the dog flew, but if you know it's impossible for a dog to sprout wings and fly you could not honestly believe that. I can't choose to believe something that goes against what I know and can explain. Therefore, if I'm not choosing to believe in that, then I default to what I know, or at least think I know, from my own experiences and reasoning. To what makes the most sense. If I'm choosing anything, it's to be rational.