Sharing Our Innermost Thoughts

Hey how do i deal with my social anxiety? Every time someone comes to talk to me, i smile and blabber stupid things. I am very comfortable with my best friends but I’m not with others. ‘Speaks whats on your mind’ I tried that and I figured out I’ve nothing going on my mind when i’m with strangers and all of them think I’m introverts or no fun to talk to. Even if i have to do presentations and all, my feets and hands turn cold and suddenly i look like a lost puppy who’s not understanding anything. I run away from my problems alot, i am never able to deal with them because i think I’ll embarrass myself in the public