Yes, I actually do that a lot. I have compared myself to characters such as Kagome from IY or Tohru from Furuba. I guess with every anime I see I always find the traits that I really like about that character and I try to see if I am any way like that. If I am not then I try to modify myself to be that way. I also look at the traits I don't like so much and of course try to shy away form them. Whether that's healthy or not is for you to decide but it seems fine to me. It is just my kind of way of forming myself into a better person I guess as strange as that may seem.