Although Twilight is not my favorite pony, I've always felt this close connection to her. She can be socially awkward and seem alien to others, sometimes that's just like me. I typically think in such a different way at sometimes people tend to not understand my point I'm trying to get across.
I'm a skeptic and a critical thinker so we both share the same thought process.
So overall I'd say Twilight Sparkle and I are similar.