Where you are, I've been there, too. I don't have the words to make it better, all I can say is I know what it looks like - I've seen it in the mirror. This time I don't have any advice. I just want you to know that I've been there. And whether or not it still shows on our faces, so have the rest of us.
We all want to feel like we have something - we can't name it or describe it, but we search for it in the faces of everyone from newly introduced strangers to our closest family and friends. We look for a smile, a laugh, or even the simplest nod of understanding. We have to know that there's something about us that makes others feel drawn to us. Heck, we all just want to be liked.
I've been in that spot where it feels like I don't have anything. I've been there. I know what it feels like to feel like you're just one in a crowd. It's worse than being disliked or hated. In that case, at least you're something. Like I said, I don't have any advice. The best I can do is assure you that, without doubt, I've felt that before. I've been there, too.