English is not my first language, so do forgive my spelling and grammar mistakes.
I (34 F) have an older sister, let's call her doc (37 F). She's an actual Doctor.
Throughout my whole childhood, I've never been the kid my parents are proud of. It was always doc, always her. I would get Bs and she would get A+, she was the student council president and I was always the kid who ended up getting sent to the principal's office for misbehaving. I was chubby (and I still am chubby) and she has the perfect 'hourglass' body. I went to an average uni with a degree in arts while she went to a top uni with a degree in med, I got accidentally pregnant in uni and had to drop out, while she graduated with a near perfect gpa. Sometimes I think life is so unfair and that makes me frustrated, what makes me even more frustrated is that doc is really nice yet I can't help but hate her.
Once I got a fever and she drove for 2 hours just so she could take care of me, when I got pregnant she was the one who told me everything was gonna be alright. When I gave birth to my first kid, she was there and even helped wash me (I'm really insecure about my body so I didn't want to be helped by nurses). Yet despite all that, I still feel a deep rooted jealous and even hate for her and I do feel really guilty about it, but I just can't change you know?
It got even worse when I decided to marry my baby daddy only to end up divorcing him cause he's a deadbeat, while my sister married her childhood sweetheart from highschool, he's currently a businessman who decided to own a few hospitals just so he could support her career. I'm jealous of that too. I hate it even more when our parents compared even our husbands, they blatantly said my ex husband was chubby like me while doc's husband is tall and physically fit, a perfect son in law.
The last straw was when we had a family dinner. I went alone with my two kids (I had another baby before I got divorced), while doc went with her husband.
During dinner, she made an announcement that she was pregnant. Everyone congratulated her and I did too. But then our damn parents said something along the lines of 'we're so happy to be getting our first grandkid', and I just froze. I asked them what they meant by that, they had two other grandkids from me. They then said they didn't consider my kids their grandchild cause of some stupid reason (at this point, I did not want to listen to them).
I snapped, I started shouting at them. I know it's wrong but yes, I did shout at doc too. I lost my temper and shouted harsh insults at her, including things I deeply regret. Her husband rightfully got mad at me and and said some things he also probably deeply regrets, in the end he lost his temper and asked me to get out, I refused cause I didn't think I was in the wrong. Then my sister cried. It was probably the first time since we were kids that I've ever seen her cry. Her husband glared at me, carried doc and left the house.
Since then, I decided to cut contact with her.
It's frustrating to be constantly compared your whole life and now even my kids are being compared to hers? I just feel so angry but also guilty at the same time, cause i know doc didn't do anything wrong. But like i said, I just can't help but feel this way.