If your fear stays, it means the solution hasn’t been found yet in our domain around us.
We are usually anxious of what we don’t know. We are curious and we want to know the “unknown”.
However, it can be much pleasant to live in the “Now Moment” and don’t care of what we cannot know or what we aren’t able to change.
Example: I’m 14. I’m negative because I don’t know what job I will do when everything will be replaced by robots. Once I found an optimist solution to it, it will be easier for me to be optimistic).
We are also highly influenced by the people we hang out with.
Remember: The pain is the fear. Fear kills soul.