"...EVERYTHING TO STOP..." - that is very good Approach. The only Thing that can help you, is a good speech therapy. Yeah, you have bad experience with therapies i know. But there are also some very good ones. I dont know where you live, but make a Research, you can go also abroad. Check the reviews. F.e. McGuire Programm is Maybe not perfect, but it may improve your Situation. And when you are lucky, there is Maybe even better theraphy in your Country (many good therapies are surprisingly not in UK or USA, f.e. there are very good ones in Czech Republic, Poland, Hungary. And my personal best is in Germany. But you have to speak the language of the Country, I think… and they are really expensive also. Have fun :)