I have thought about how lucky I am that I personally exist, but I've never really expanded that to every/anything.

What is the "I" that creates such a statement? This has been an subject of investigation of mine for a while now. While I can be almost sure that physical matter exists (although I have not the slightest clue how or why it came into existence), under close observation the Self seems to flash in and out of existence as circumstances permit. It all comes down to the impossibility of simultaneously being a subject and object of experience. To concertize it, think about an activity that completely engrosses you, something that captures %100 of your attention; Perhaps this is creating art. Are you Pierre then?

I become self aware and universally aware all the time. I actually really hate it because when I think too much I get really terrified. :/

Sometimes I will look at myself in the mirror and become transfixed, disturbed, even, by the notion of my own existence. I'll feel occasionally like I'm looking out of someone else's eyes. My skin will almost crawl at the overwhelming realization that I'm REAL. So yeah, I get what you're saying.

I feel the exact same way.

I think over time the disturbing and unfamiliar feeling has come to be replaced by a feeling of wonder. The question which has no answer can only be grasped by an appreciation of the question itself.

http://en.wikipedia.org/wiki/Higgs_boson
Not completely

yes and it creeps me the fuck out