Probably not at a surface level. I think my two main characters, Albus and Styrka, are both different from me in how they act and speak, but I also wrote my story while relating it to the feelings I had at the time. For example, Styrka is, in many way, created out of the homesickness I was feeling during my first half of uni, when I had moved to a new city a country away from my family. Styrka was uprooted a lot during her childhood, and that is how I've developed her character. She doesn't know where she belongs, she wants to see her parents' (they are immigrants) homeland, ut she is also anxious of loosing the security she's currently feeling.
Albus is a little bit more of a role-filler than a character I poured my own emotions into, but he is an optimist who hasn't ever had a lot of friends, which I can relate to a lot. I didn't MEAN for that to be a reflection of my feelings though xD
A minor character that sort of reflects my more introspective shame though is Gratiana. She's currently on the "bad" side, and she's frustrated that people can't just suck it up and accept the bad things, instead of being "difficult" and going against the stream, aka being on the good side. I'll always kick myself when I accidentally think something like "that person should just try harder", but I still get those thoughts, unfortunately, and I guess? Gratiana is how I deal with it?? lol. I really like her as a character too, I'm excited to get deeper into her arc in the future!