It may be just saying don't be delusional. There are probably some situations in life that are bad no matter how you look at it, and people may be just expecting to get through them and have things turn out okay just as long as they have a positive attitude. Despite the possible presence of a God or whatever (which I believe in), that doesn't mean that we're absolutely powerless to help ourselves out, sometimes we have to take the first step, or several steps, in improving our situation. There's a joke out there about God promising to help some man win the lottery, and days go by where he doesn't win, so he asks God why he didn't help him, only to be told that all he needed to do was buy the lottery ticket! So I think that's all its trying to say is be positive, but be realistic, and when you need help don't be afraid to get it and/or ask for it.