If you need it, you don't have it.
If you have it, you need more of it.
If you have more of it, you don't need less of it.
You need it to get it.
And you certainly need it to get more of it.
But if you don't already have any of it to begin with,
you can't get any of it to get started with,
so you have no idea how to get any of it in the first place.
If you've never had any of it...ever. People just seem to know.