I think being nervous is quite natural and in some cases it could be something that actually saves one’s life.

Being nervous around people makes me cautious of their every move. I have developed the habit of observing people and have avoided many dangerous situations.
Noises…. well some of it are just creepy. Could you blame me? Imagine a wailing cat at 3 am in the night. Not something that I would make me think of happy thoughts.
And of course, with everything odd that does actually happen in the world, add to it my wild imagination. And even there is no base in reality for it, I get nervous.
But the one thing I do despite being nervous is to fight through it. Keep breathing and make smart choices.