Stuttering is rarely cured, though it is possible. It all depends on the root cause of your stutter and the motivation to lessen it. The more expectations you have towards the treatment, the more likely you are to be disappointed. The recommended approach is to make the efforts required of you during treatment without creating an attachment to potential result. This is incredibly difficult to do and requires a certain level of acceptance. Stuttering is one of these things that naturally lessen the more we are willing to accept it. That is why self-compassion is in the center of any potential benefit we could ever gain from any treatment. Always try to remain kind and patient towards yourself.