Keep track of your accomplishments at work on a regular basis. From being part of a project team to saving the company money, anything you do to make a difference for the organization should be written down and saved. Now, during performance reviews you have a list of achievements to review with your supervisor, and lots of information to choose from for a resume update. I recommend having a file just for career accomplishments at your home where you can easily find the information. Whether you track it month-to-month or year-to-year you will have a comprehensive account of your work success.