Getting over obsession about his amazing ex-girlfriend?

So my boyfriend and I have been dating for 11 months and I cant seem to shake my jealousy about his ex. She is perfect. She has a perfect family, comes from money and a family full of success, is very pretty, according to my bf has "amazing eyes", and just finished law school at age 28. Our life situtaions, backgrounds, family, appearences are the exact opposite. Not to mention she shared so many lovely experiences with my boyfriend like living in Costa Rica, sharing a home, gettting a dog, traveling in various parts of the world. I just cant imgaine how I could compare to what she is and what they had. I cant get past the feeling he gave up the best thing that happened to him, his ex.

I know, most people will say, that he is with me now and to get over it, but that never seems to help.

What mind switch helps to get past this feeling?