I GOT Shingles ... im 22 years old?

I just got shingles .. im 22 years old and the doctor told me it was because i have chronic stress ... i know he is right .. Im 22 and i worry like its going out of style .. i deal with anxiety and stress every day and its really over nothing .. i have no drive to even get out and exercise . I dont ever want these shingles to come back EVER ! they are soo painfull.. the worst pain ive ever felt . What can i do to make sure they dont come back