When you get to the point where you’ve been standing in front of the mirror for hours and you realise it is completely futile. It’s literally hopeless. You will always be this hideous monstrous inhuman creature.
That ought to be a cue for self-acceptance. You ought to now be able to come to terms with ‘this is me. I’m ugly. So what?’
But no. It’s a cue for falling into an even deeper pit of despair and utter paralysis.
(For the record, BDD and vanity are polar opposites. If you still live in the dark ages and believe otherwise, then please go get educated.)