My question to you is if you can speak fine by yourself, why do you need to practice speaking? That's like if you are a great basketball player and you can sink every 3 point shot when you are by yourself but when theres people on the court, you cant sink any shots. That's like going back by yourself and continuing shooting thinking it will help even though you do it fine by yourself. The real problem is why cant we speak the same way to other people the way we speak by ourselves. And once you work on that. Real transformation happens.