Your stutter is such a small part of you. I felt the same way you do at 23, but it will change as long as you don’t give up. I used my stutter as an excuse to not do things because I was scared, looking back on it, it’s what people call anxiety now. You’ve got to hang in there and grow in to yourself. What kind of work do you do? I suggest something where you have to speak with people daily, even it is just superficial “good morning sir/ma’am “ talking. This will help a lot and you will notice even if you do stutter most people don’t care or notice.