Oh yeah, as Sauron said, self-inserting into stuff is a big mistake plenty of people does. If you wanna try improving on how to get in-character I'd say a good way to do that is to try and create a character that you don't like, or that is radically different to you. One of the best writers in Discovery in my humble opinion is @Reeves so you could probably ask him about this if you want some advice from someone with experience.
