for a better life. >> reporter: doug and mary jefferies achieved their better life. but they're afraid it's going to slip out of their grasp. >> one day, i broke down crying, saying pastor i ain't doing so well today. >> the sufferings of this present time -- >> reporter: carl fields is a devout christian but being tested by the toughest economy in years. >> reporter: has your faith diminished at all? think uh-oh. >> hallelujah. thank you, lord god, i know lord god, to this day -- ♪ ♪ work, work all week long