I can self-identify as a hungry dead person. There are no rules anymore. I think I will self-identify as a Christian that believes all prayers come true. Then I will pray i can fly. Then when I jump off the building and die my kids can sue the church for not recognizing my self-identity. I may be gone, but they will be rich.
Good luck finding Christian church that teaches all prayers come true. I don't think they even teach all prayers are answered -- at least not with the answers we want.
That's because the Christian churches do not preach what the Bible actually says, (Matthew 18:19) It's a good thing though, otherwise they would be just as murderous as the Muslims. (Deuteronomy 17:2 – 17.7)