Your CV/resume is a work in progress. It's not something you write today and forget about; it evolves and changes with you. Placing it on a firm foundation will save you time in the future and make you ready to apply for any new job that comes up. The major part of stress related to writing CVs comes from the nerve-wracking process of trying to remember all the dates of our work and education history. By updating your CV regularly, item by item, you will skip that dull part, and always come prepared.