Yes. Anyone can start a new career at any time. However, if you’re interested in trying out a new career when you’re older, especially if you’re thinking about finding a new job as part of a midlife crisis, then you might want to look into a career that doesn’t require a lot of schooling or pulls on schooling you already have. If a new job requires a bachelor’s degree, then it might be difficult for an older person to move into because there will be an extra buffer of time and energy.