This is difficult and a huge problem. Entire industries have been built around attempting to demonstrate ways to overcome stuttering, and they are mostly all scams. They prey on our vulnerability for answers to currently unknown questions. Some interventions might work in the short term, but long term is a different story. The future, I believe, is bright. Stuttering research has come far throughout the years, we're progressively understanding more and more about stuttering. One day we'll look back and be amazed on just the sheer amount of people that were attempting to scam us.