Lots of times at college or at church, I get extremely shy that I tend to isolate myself alot around people my age. I got rejected, made fun of, left out, ridiculed, beaten up, and shunned nearly all my life when I was in high school or before and lots of times at college, I become very shy because I'm afraid that other students will reject me and think that I'm completely worthless and I stutter a whole lot and my mind goes blank during a conversation. I'm the world's worst speaker. Does anyone have any advice that would help me overcome this nervousness and shyness?