Its what actions you take that will cause reaction. Being an introvert is not going necessarily be a bad thing and actually can help you in sales.  Introverts tend to be behind the scenes and not the loudest person in the room. Learn how to sell first,  YouTube videos is a challenging way. One good this is Introverts have one skill that extroverts have a hard time with - listening. Introverts are expert listeners since they aren’t always planning their next thing to say. Introverts truly listen to the response of a question. You put your mind to it and you can accomplish this, otherwise choose another avenue for your career since your finances will pressure you.