This is what doesn't make sense about all the people who try to give people suffering from SA advice. So many people will try to tell you that, "You are fine the way you are," or "don't change yourself to please other people."
Well, most of these people with SA are unhappy with the way they are and have no choice but to change themselves to please other people. Unfortunately, happiness doesn't solely lie from within. That inner peace, Ghandi, spirituality stuff (whatever you want to call it) is destined to fail you eventually, I know from experience.
The truth is that the only way to be complete is to enough connections with other people to be happy and comfortable with who you are. It is a myth that inner happiness is necessary before you are able to connect with others. In fact, it's the opposite; you must achieve personal connections with others in order to receive inner happiness.
Positivity and confidence are not created from self, they are attained from the outside (meaning successful connections with other people). You can try to be positive all you want, but if you don't talk to enough people, it's only fake positivity and lying to yourself, which will give you disappointment.