Learning to deal with stuttering can involve:
1. Working on your ‘inner world’ and allowing this to manifest on the outside.
2. Working on your ‘outer world’ and letting this increase your confidence on the inside.
I prefer number 1.
However, with number 1, you still need to allow the ‘inner world work’ to do it’s thing. This can be very challenging. It requires courage to let go and walk into the unknown. It is necessary though.