Social anxiety is something that bleeds in our head, it takes time and effort to get better. Stop thinking that sa has ruined your life, move forward and do something about it. To be happy, you have to be happy with yourself first. Work hard, have a target in your life. Focus on it. Turn jealous and envy thoughts into desire to achieve. Who cares what other people think of you, if you're comfortable with you then your fine. Believe in yourself, thats all we have in us.