We do not "choose" to believe. I dispute your truth claim.
I do not equate lying to oneself until succumbing to one's own delusion with "choosing" to believe. If this is what you mean, then I don't want any of it. Additionally, you will please note that I said I might be able to convince myself of something untrue; I am not certain that it would take. I find it more likely that somewhere deep down, I would still know that what I was trying to believe was a lie.
Please choose to believe, right now, totally and with all of your mind and heart, that you are a giraffe. If you tell me that you have accomplished this feat, I will believe you. If you cannot, then your claim of being able to "choose" what you belief is nonsense.
People certainly understand evidence differently, and some people do not find individual pieces of evidence valid or persuasive. However, people are compelled to believe they evidence they do accept, as they understand it. We do not "choose" how we understand things. For my part, I know that I honestly believe the things I believe, because I cannot reconcile with reality the idea of those things being otherwise. There is no other option, no other "choice," than that which I understand as reality. Perhaps you work differently, and can choose to believe things arbitrarily. I have asked you to demonstrate this power. Please do. And it doesn't even have to be the giraffe thing, if you don't like giraffes. Just pick one thing that you know to be false, and "choose" to completely, honestly, totally believe it. That will be satisfactory.
And please be careful; you came very close to an ad hominem attack in that last statement.