"Overcoming " is such an ambiguous word. For some, it means "improvement." For others, it means 100% fluency. I'm 54, and my stutter started at the age of 5 as a result of a dog attack. I've had 20 years of speech therapy and I went from 0% to now about 80% and I'm fine with that. I've accepted my stutter and there is a freedom in letting go. Confidence plays a role but I still stutter when I'm confident. Stuttering is so individualistic and everyone's journey is different. Wherever you are in your journey you do what you feel is right for you, there's no cookie cutter to this. I wish you well