I feel for you. I had the same problem. You can learn this kind of stuff. Try to pay attention to the others you will find out that this is hard and frustrating, but there is nothing more rewarding. Also try to exist otherwise than by speaking. I used to have the problem you have: I flet like speaking was the only way I could exist, the only way the other could notice than I'm here, that got me speaking to loud, inapropriatly, being uninteressting and rude with all the social consequences than follow. Try to look what around you, feel good in the place you are. Think twice whenever you say something.
For your trim, that's another problem, I also have a trim, but I can hide it. That's gonna be another challenge to get rid of it, or at least to hide it.