You can fix your "um" and you probably should. Each of us now owns a media channel and a brand, and sooner or later, as your work gains traction, we'll hear your voice. Either in a job interview o
Cendrine Marrouat - cendrinemarrouat.com:
English is not my mother tongue, so this post hits home strongly. At the beginning of my career, I used to worry that I would never be able to express myself properly in front of an audience.
It took me months of hard work and building my self-confidence to be able to speak the way I do now. I still struggle, but I'm grateful for all the opportunities I have gotten.
As Seth Godin suggests, take your time and replace the "ums" with silence. Think as though someone was totally giving you the floor and don't be afraid of interruptions and mistakes.