Its not going to happen for 99% of us. Achieving perfect fluency in adulthood is close to an impossibilty believing in some no stutter miracle only leads to heart break, sadness and more anxiety and depression when all your hard work and efforts fail, you can spend years even decades on trying to achieve the unachievable. Focusing on your own mental health, self worth and confidence will serve you a lot better than spending your time on trying to eliminate your stutter. Self confidence, embracing while also being indifferent to my stutter has improved my fluency more than any fluency techniques ever have.