I don't know what I believe.
If I pray for something, it usually get's answered in a direct or indirect way. But then again I'm sceptical about whether the same thing would have happened if I didn't ask for it...and even if there was something there, who's to say it's an all-knowing, loving supreme being? It could be anything ranging from a guardian angel, ghosts or just fate/good fortune.
It's really all very ambiguous which is why I just take everything as it comes, and don't follow a strict set of rules.