Believe that you can say your name without a stutter! For a long time I couldn't say my name and then in my dream once, I introduced myself without stuttering and I could not believe it. A day or two later someone asked me what my name was and I said it without a stutter, was so happy inside and since then, I have never had any issues. For a start I suggest you say, "I'm ___" or "Hi, my name is ___" or "Hi, I'm ___"