Also, if I am all that exists in my world – do I have a star family somewhere – or am I creating them as well – and they didn’t exist say a few years ago, when I hadn’t thought of them.”

When I say that you are all that exists in your world, what I am referring to is perception…the understanding that everything in your reality is perceived thru your own unique lens.  In other words, what you are interpreting in your outer world via your reflection is actually and literally the contents of your own consciousness.

That said, yes we all have star family…and they exist whether we perceive them or not, the same way angels exist whether we perceive them or not.  But neither will be part of YOUR world until you open/unlock that realization in your own consciousness.
Make sense?