Sales is a field that requires excellent communication skills and the ability to connect with customers on a personal level. While not having a university degree may present challenges, it's not a guarantee for failure. Your background in admin can provide you with transferable skills that are valuable in a sales role. As for being introverted, it's important to remember that introverted individuals can be successful in sales as long as they have a strong work ethic and the ability to adapt to new situations. It may take some time and effort to develop your sales skills, but don't give up. With dedication and hard work, you can succeed in this field. Best of luck in your career journey!