Deep down inside, we're all a little worried when we feel like we somehow “landed a better model” than we feel we should be able to. We worry, "She's going to wake up one day and realize she could probably have much better." The way to get over that is to realize one's own self-worth and say to oneself, "Hey, she's pretty awesome. And it would hurt if she left me. But I'll eventually be okay. And I have a lot to offer, too." (edited for grammar)