*What counts as natural and what doesn't?*

I hear people throwing around the name "natural". I know what it means, and some people who it applies to.

I was wondering how you become a natural?
I don't mean how to go from noob to natural, I'm talking what defines a natural?

Because I see loads of people on here, starting out going "Well I've only been here for 2 months and I've only had 5 lucids".

Two things make up my question:

What defines a natural compared to someone who is struggling?

WHY AM I STRUGGLING