life. >> bow our heads and lift our hearts. >> reporter: doug and mary jeffreys achieved their better life. but they're afraid it's going to slip out of their grasp. >> one day i broke down and said pastor, i ain't doing so well today. >> and carl fields is a devout christian, but he is being tested by the toughest economy in years. has your faith diminished at all? did you think uh-oh? >> hallelujah, thank you lord god. i know lord god that this day -- and here's where the diet stuff happens. like the other stuff, diet snapple has healthy stuff.