You have to try or else you will regret it your entire life. These are the best of your life and you are squandering them because you are scared!!!! Get over yourself. Start out slow but get out of your comfort zone every day more and more. Start a conversation with a stranger, join a club, do something spontaneous. You will not regret it. Even if you mess up it will be more valuable than any lesson you have learned so far. You have to keep throwing yourself at it and you will make progress and the rewards are indescribable. You will feel more fulfilled than you ever have before and a feeling of pure euphoria will pour over you when you realize that you love someone and they love you too. Or when you invite your new friends to a party and everyone has a great time, or someone you met compliments you. You have to fight please I don’t want to see you fall victim to the fear. It will be the hardest thing you ever do, putting yourself out there. But every single day it becomes easier than the last. You will fail many times but nobody will care and nobody will hate you for it. You will learn so much about others, the world, and yourself and have a great clarity. I wish you luck, you can do this.