I actually used to feel like that and also still do sometimes, but at age of 10 I picked up a hobby which is football in my case and kept on training and as I got better and playing with other people steadily people started to admire me. Me some one who blocks when he speaks. and many became my friends just because I was good in foot ball and my anxiety diminished slowly since I was playing with stranger and after that I didn't give a shit if I stuttered or not, I still don't like it but it does not bother me My advice pick a hobby you are good at and if you don't have one choose one you love and train at it Be strong brother, I am sure one day we will over come this obstacle