Faith is hard to come by. I think that's why people pray so much for it. I don't know how you find it, let alone keep it. So I'd be the wrong person to ask... Not that you're asking. But I don't think faith is impossible to find. People do. You could.
[ooc: The season 5 episode 'The Body' is probably the saddest episode in the series. Be prepared with tissues. ]