Fear used to be all about self-preservation. This is what kept us alive during our evolution. Seeing a tiger or bear in front of you meant you had to make no sounds and avoid being seen because if it did see you it would lead to a fight or flee situation where, in both cases, you would have been in serious disadvantage.
Now things have changed. There is hardly any chance that any of us will be in such a situation. But our fear is still present deep in our brain making us scared of all sorts of things that never threaten our life. People are more afraid of speaking in public than they are of death.
As long as it’s not a life threatening situation, which in most cases isn’t, fear is standing between you and your dreams. Go out there and do things that scare you, that’s the only way you will stand out of the crowd and become memorable.