Your boss who seems so confident is afraid too.
The colleague who has always something relevant to share is anxious too.
That speaker you love for the way they thrill the audience is nervous too.
The successful entrepreneur you are reading about is worried too.
The point is not making fear, anxiety, and the like go away. The point is using them to your advantage. Can fear push you to get out of your comfort zone and see what is out there? Can anxiety help you run through different scenarios and find them not as scary as they initially seemed? Can nervousness be the reason why you practice one more time? Can worry fire up a need to consult different perspective without getting stuck?
Make the most of what you have, even when at first it seems like something you just want to run away from.