To be honest, looking back....am not sure what (if any tricks/tools) i used. Maybe i stopped caring... and that let me be less worried about doing it - not sure. I will say, ive been told and notice myself that when i answer the phone* i sound very different, lile a lower... more "airy" voice * one of my biggest stuttering issues was i wasn't able to say hello on the phone when i answered. I partly wonder if i adopted a heavy breathing out, the first part of saying the "H", when i answer the phone to navigate around that issue. ? Really don't know