How do i stop obsessing over my looks

In high school i was pretty confident (most of the time) and was fine with the way i looked, after graduating i moved town for college and it prob started then. I did get insecure sometimes in highschool but it wasnt like this, i wake up and sleep thinking ab my looks, stare at my self in mirror thinking ab the surgeries i could get that would make me look better, and started even disliking getting ready bcz that means ill have to face myself again. Like even my friends telling my im pretty stopped mattering. I know how unhealthy and sad this is cause i always used to think ppl r so much more than their appearance and all. But i just cant help it those days… when someone is like not so kind to me, i immediately start thinking is it my looks.. like ik im not hideous but yk how greedy person can be