How can you be a confident person having a severe stutter?

How can you be a confident person having a severe stutter? I understand that selling yourself the right way will in a way dictate how people respond to you. But htf am I supposed to be confident in myself when I know I have something that is embarrassing and anticlimactic? I know it's not my fault but blocking and getting stuck while taking is akward I can't come across as confident, or charismatic while pulling weird faces