This is a bad comparison, and incredibly misleading. Treating stuttering the way you suggest was *the* primary focus of speech therapy for decades. While nowadays, if you have a therapist worth their salt, the primary focus is learning to be okay with it and to accept it, as well as techniques to overcome the instances, previously it was entirely about management. The focus on managing and diminishing the stutter was so sharp that many people developed lasting psychological difficulties, because it wasn't going away even though their therapist was supposedly teaching them ways to get rid of it. The science doesn't back this up. Treatment worked the way you are suggesting for ages, and it was disastrous for many people. You compare it to a placebo effect here, where a person cannot do something simply because they believe they can't, but stuttering is not a placebo. It manifests often in children who do not want it, and do not know that it is impossible to get rid of, and it persists anyway. I understand a desire to be rid of it forever, and I understand that it can be hard to accept that you're stuck with it. But unless you're in the small margin of people for whom it miraculously disappears years later, I'm sorry. You're out of luck.