Sometimes I can relate...

Those days when you go out into the world thinking you pretty good that day.
Then you go to the store and are surrounded by people who (in your oppinion) look so much better than you.

I have those days when the thought runs through my head, "that person is not attractive at all and yet they have a significant other that loves them for who they are, what the hell am I doing wrong to still be single?"

Then I get over it.