I used to have a friend (my fp) who I always felt like I fell short too, it didn’t help that people made jokes like we were twins, she was just the better twin. She even made a poll to a prove to me she wasn’t favorited by others, but she made it one her Facebook. Which had her friends. She won in a landslide and I ended up crying the whole night. She always meant well but it never landed. We had a falling out 6 years ago but reconnected this year. I’ve always loved her but also hated her and felt a huge amount of resentment towards her for abandoning me when I needed her 6 years ago. It was over a misunderstanding and she even told me she just didn’t know how to fess up to her own fault, doesn’t change the fact she hurt me. 
She’s grown a lot since then and has become an entirely different person. I’m happy we reconnected but recently she dyed her hair the same color as me and started another hobby that I enjoy that she didn’t in the past. I feel like my identity that I was finally able to make my own, is being taken, and being done better. The few friends we have in common still are always gushing on her photos and telling me how great she is, even if I was the one to introduce them. Even if the person knew me first. I can’t let go of my resentment or jealousy yet I still do love her. Will I ever feel like I’m not some genetic copy of this girl? Can I even be confident in myself and not act like someone else?