Oughghh, It’s hard to pick just one character I’m most similar to. I guess if I absolutely had to limit it to one it’d be Princess Luna. I’ve always been a night person, and I relate to her personal struggles quite a bit.
If it’s not just one character I’d say I’m most similar to some combination of Luna-Izzy-Fluttershy-Misty-Twilight in that order.
Luna, already mentioned.
Izzy, I like making stuff, I like being creative, and I relate a lot to her general attitude.
Fluttershy, I like animals and am generally soft spoken.
Misty, anxiety, and the whole not fitting in thing like with Luna
Twilight, I can be very neurotic and have a bad habit of sometimes hyper focusing on just one thing for an unhealthy amount of time without realizing it.