I think the opening line from St. Paul's letter to the Philippians deserves a citation: “Brothers and sisters: Have no anxiety at all, but in everything, by prayer and petition, with thanksgiving, make your requests known to God. Then the peace of God that surpasses all understanding will guard your hearts and minds in Christ Jesus” (Phil 4:6-7).
I guess we aren't the only age that experiences anxiety. People 2,000 years ago were filled with worry and anxiety as well. In fact, they probably had more cause for anxiety than we. Food was much more difficult to come by, sickness and disease much more prevalent, and death a constant companion.