In life there are certain obstacles within us that stop us from changing our lives (in your example, fear of this presentation).
If you don't overcome this fear your life will never change.
Yes you can avoid, but it will appear in a different form wherever you go.
As soon as you start working through it your life will start changing. Even if you fail to get through it to start with, little will start changing. Eventually you will get through and find a changed life.
Good luck and you can do it