Jealousy problem

I have a jealousy problem and I know it’s my insecurities. I was thinking where it all started. I remember when I was in elementary, an older boy told me “your sister is more beautiful (or prettier) than you.” My sister is younger than me. And after that I’ve always thought I wasn’t pretty. Then in middle and high school, my mom tells me I need plastic surgery for my eyes (I’m Asian) and my dad tells me I ruin pictures. I had a classmate in high school who would make fun of my nose. So that made me hate my nose for a long time.

I tried ending it with my bf yesterday plus we have a baby together. I tried ending it because I know it’s unhealthy for both of us. I also thought he can find someone better. He didn’t want to end things and wants me to just stop being jealous. I told him it’s hard and I want it to stop because I hate feeling like this.

All my bf has female friends who are pretty and successful. I do get jealous. I hate being jealous of his friends let alone other females. That’s another reason why I tried ending it with him. I wanted him to not feel he has to hide who he is talking to because I get jealous easily.

But I also want my daughter to have both parents together because I’ve never experienced that and I want her to always have the confidence that I didn’t have.

How can I have more confidence or stop being jealous? Does anyone have any tips or advice? Anything would help.