You feel inferior in dating because you're comparing yourself to someone you see as higher-status. The fix isn't pretending they're not impressive. It's remembering you're equals, and their achievements don't make you worth less.
One of the things that makes us feel inferior in dating is this feeling that we don't match up to what we see out there. So we go into a date and we feel not good enough. We look at someone and we think they're intimidating because of the way they look or their style, or what they've achieved in their life, or the speed of their wit. And we think, God, I can't match up to this person. But if we see them as being on a level playing field with us where we're different but equal, we can simply celebrate those aspects of them. The same is true in a relationship. Someone else's success in a relationship doesn't diminish our worth. We can be with someone who is incredibly impressive in all sorts of ways and simply celebrate them, knowing it takes nothing away from our inherent value.
