Try to do your research on the therapist or therapy you want. One thing I will let you is, it takes a lot of work, and dont be dismayed if it doesn't work right away. What could likely happen is a for the first few weeks of therapy or whenever, your speech will improve, and then go back to normal. you need to keep up with your practices and work if you dont want it to revert back. its not easy and you have to want it. where do you live btw?