Americans are stressed but also hopeful. Here's why both are possible.

Eight in ten say that the world is changing too fast, which is about has high as we've seen that in the last 18 months. About six in ten say they are often stressed. And recall that half of Americans don't have any money left after paying their bills. But somehow despite all of that, 76% are still hopeful for their future. Also, despite that hope, more 18 to 34 year-olds (63%, up four points) now say that they're waiting to start a family until they feel more financially secure.