If unchecked, it results in great anxiety or even mental illness. You get a warning first, often with a physical problem. Worry causes hysteria, Lk. All people have areas in which they are prone to worry. People cause worry.
People are always worried about other people.
You can always find an object if you really want to worry. Economic disaster is a cause of worry, Jer. Sin causes worry. Worry does not solve problems, Matt. Therefore, blessing from God includes freedom from worry.