Afraid this became my whole personality and self sabotaging

Afraid this became my whole personality and self sabotaging Hello, I'm 15M and this is a deep rooted issue. I've been stuttering since I was like 9 years old do to stress and I've never outgrown it, speech therapists said its an anxiety issue so I'm going to a regular therapist now but there's an issue. Of course I wanna get rid of my stuttering and anxiety but almost at all times I think about it so I'm afraid, "what will I think about then?, I'm probably a boring person without my issues, I'll be exactly the same like everyone else" those are some of the things going through my head and it's annoying cause I wanna get rid of it but there's a small part of me that keeps self sabotaging and stuff. I'm really close to a breaking point again because it's so stupid and I absolutely hate it, I know I can reduce my stutter by 90% in a short time and sometimes i think "itll be weird if i suddenly stop stuttering next morning so i wont do this thing" stuff like that but it's like whenever I stutter when doing some psychological trick I instantly give up without even thinking and go back to whine about it. I'm so pathetic for this but I can't help it, I need some advice please.