I'm still not entirely sure what this discussion is supposed to be about. You're asking if there are any excuses why one shouldn't view themselves as beautiful or make changes in their lives to become beautiful to themselves? A lot of people will never find themselves beautiful no matter what they do. Other people define their own personal beauty based on the opinions of others or the opinions of the media. The media expects women to be anorexic while somehow maintaining giant briasts.
And still other people simply can't afford the necessary surgeries or whatever to fix certain problems they perceive about their appearance.
The question is, with so many opportunities to become better people, aesthetically, do we really have a reason to not be beautiful?
Like I said, we don't because we make ourselves feel ugly due to our own standards.
As you have mentioned, some people may base their standards of beauty on what the media says. The media's way of advertising beauty is meant to be unattainable so to keep people striving for beauty by purchasing their products. So, with the logic I have presented earlier (if you want something impossible, it's your fault for wanting it) it is your fault if you want to look like what the media sells you because the media is selling you something designed to be impossible. Since it's literally impossible to look like what the media says you should (thanks to image editing, you can't bend your body like you can pixels) it's your fault for wanting to look like that because it's impossible.
I suppose my argument may be a bit skewed because it went from a simple question to a rather complex query. There are a few strings attached.
You have no excuse to not be beautiful because everything you can possibly want
reasonably, is attainable.
Wanting to be taller is unreasonable as you cannot bend you height to your whim.
Wanting to have certain features (like blue eyes, or a drastically different skin tone) is unreasonable because you cannot change your eye color nor your skin tone too drastically.
The list goes on.
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So, to simplify. We have no excuse to not be beautiful because everything we could reasonably desire is attainable.