Do you block on every single word even when talking to friends? I'm 18 just graduated HS, in HS i never said a word in class, yet when I was with my friends I could be a little fluent. Sometimes I couldn't say a single word at all, but I realize that changing my mindset has helped me a lot. You need to realize most people do not care if you stutter, you are putting too much pressure on yourself. You might be waaaay too nervous. When I'm nervous I can't say a word either. Try doing some breathing excercises or meditating. I find it really hard to believe someone who does 100 street contacts can't say a word.