With the average individual staying at each of his or her jobs for just 4.4 years, job-hopping is the new norm, according to the Bureau of Labor Statistics. If you’ve hop-scotched through a few different jobs in the last decade but are not loving your chosen professional field, you may be considering a career change at 30. Thirty is the perfect time to start a new career: you’ve amassed nearly a decade of valuable, post-college work experience and you may even have master’s degree or MBA to complement this experience.