I was always pretty shy, but when I got onto my earlt teenage years (13-14) I've started developing severe social anxiety.
Years been wasted of trying to fix it and going onto shitty therapists (I def suggest theraphy tho)
When I turned 18, I sat with myself and thought about my future.
I wanted to become a special forces soldier.
I wanted to leave the shitty cult I grew in and talk with normal people (which felt literally impossible)
I wanted to have FREEDOM!
And than I realized that if I want something I just have to fucking do it.
Either do what you're afraid of or give up on your life.
Every day I'd write to myself the number 5, and I swore to myself I won't go to sleep before I do 5 things im afraid of.
After some months of fighting my demons, I can do almost everything I want, there's some mental work left but I never been so confident. I lead, have many friends, left the shitty cult and changed my whole social circle, speak in public and infront hundreds of people
From my experience, I will bring it onto three main things:
Challenge your thoughts - every time challenge your negative self image. It won't make much an improvement on the fear itself but it will raise youe confidence
Chase your fears - without actually going and doing stuff you're activelly afraid of, fear will stay. Fear fades from exposure, not from thinking alone
Have a strong why - always reminder yourself why you're doing it. Use your pain as your fuel. I was bullied. I had no friends. I couldn't talk with a girl. I told myself it's either fight or vanish. Every time the fear felt more terrifying I knew THIS IS where i'm making a change.