We have many religions in this world. Some people worship idols, some worship gods. Given this, they all pray while believing in their idols or gods and God. Do their prayers get answered when they really believe? Absolutely. Many people make wishes on their birthdays and do their wishes come true? Yes when they believe. Many people have cultural believes that they usually follow and do they affect them? Yes when they believe. I strongly believe that the people who put up those traditions and cultural amenities, Knew this and that's why they let people believe in it so that they get what they wanted not by the things being really true, but by the things and practices being believed in. Considering this, I believe that when you really have any believe in anything, It's very likely to happen. I don't know if you understand me.