Practice pushing yourself out of your comfort zone, it's rough , you're going to fail (like I did many times) but I did have some wins and that built up my confidence level. Any coach will tell you that if you want to improve on anything, you have to practice. I was a severe introvert until I started pushing myself out of my comfort zone. (Sidebar: I practiced my name in front of a mirror for a year and I practiced talking on the telephone ☎️ for 6 months)