Are you sure you're saying GP should "work on that" out of a genuine desire for them to improve, rather than a way to puritanically assert a perceived lack of virtue that you think they should mediate?
Because if not, maybe there's something /you/ "really really should work on."
"All I could think was how repulsed she would feel if she ever saw [real me] ... I just could never get past how I feel about myself, and see myself, relative to her"
That's not healthy, it's almost uncertainly untrue (we all have bodies!), and it's something therapy could help with.
We all struggle more or less with imaginary problems which talked about could go away. I see this a lot on HN and it’s what makes this space more human.
Did you read the article? This is an HN discussion of feminine standards of beauty. The whole discussion is going to run straight into the rocks of people's personal situations and I have no idea how one could expect otherwise.