feeling different.

That did help. I am also 20 and have always thought about who I am, and deep down I know who I am. Like you said, sometimes feeling as though my way of expressing myself is different and sometimes I feel as if I'm going to say something out of the ordinary that people don't understand, which does happen often. In this life I've learned this and don't get embarrassed when I do things differently, It's just how I am. Though I feel like I know myself very well, I still know there are things I don't know and I have a very keen interest on discovering things about and in this life. Thank you =)

You sound like a natural introvert.

This doesn’t necessarily have anything to do w/ a past life. It may just be that this time you wanted to savor what the introvert experience was.

Just be completely OK w/ who you are. Fully respect your self.

That sounds *exactly* like me. In elementary school I was loud and often got in trouble for talking, and my classmates had me categorized as the 'obnoxious loud weird girl' haha (so even then I didn't exactly get along with many people). But when I entered middle school, I just started becoming reclusive and I still don't like being around people much. I've always felt very connected to nature and animals and I love observing people.
I don't know where I'm going with this; I just wanted to marvel at the similarities.