Loneliness Support Group
Loneliness is an emotional state in which a person experiences a powerful feeling of emptiness and isolation. Loneliness is more than the feeling of wanting company or wanting to do something with another person. Loneliness is a feeling of being cut off, disconnected and alienated from other people. The lonely person may find it difficult or even impossible to have any...

Fast forward to 2017 - I have accomolished a great deal in my life, countless things in fact. Dont let 4 years of your life define who you are. When you look back you will see high school was a waste of time. Its plastered with awkwardness and schools do not prepare you for the world outside. Take it from us adults, you are doing just fine.
So my best advice for confidance building is "fake it til you make it" or rather BECOME it, as I heard recently.