Undecided Question

How can i stop wanting other people's beauty?

I am pretty enough, in my own way
I have a medium-tan skin tone and black hair, and dark eyes
My best feature are my eyes and my skin is pretty clear and even
My lips are okay and my nose could be better, i have a good height
but side views of my face are horrid, and i have a odd body structure

But whenever i see anybody anywhere with lighter brighter skin, or a larger mouth, or a better nose, or anyone who is also very pretty in their own way, i can't help wanting to look like them, and that makes me lose self-esteem and confidence in my education, love life, family life..etc

I wouldnt say im jealous, but if i was prettier or cuter maybe my crush would be more interested in me, or i would finally be that confident goodlooking girl who has an affect on other people