I had to introduce myself to nearly 20 complete strangers at my college orientation in 2015 and had one of the worst blocks of my life. Embarrassed, frustrated, upset - I just wanted to skip college. I was in your shoes, worried about class introductions and being approached by strangers. Three years later, I'm about to start my senior year in business administration (something I had no interest in three years ago). The uncomfortable situations help you grow and think less of your speech. Also, I recommend trying to make some friends early. Some of my best friends were strangers that were my dorm neighbors. I know I'm just some random guy on the internet, but you can do it. If I can do it, anyone can.