Pretty enough for who and what?
Why are you taking your value from how you look?
I think everyone would do better if they realised we are all a product of our genes and we can't all be stunningly beautiful.
I was cute as a baby and toddler, quite pretty as a small child, bloody awful as a bigger kid and now I'm in my fifties I have about six days a year when I can see what my lover sees in me. The rest of the time I have no time for how I look. My value is I'm good at my job, two people had the support they needed to be fed, helped to bed, some chores done which they might not have got if I'd not gone in on my day off.
We all have our strengths and weaknesses and what you think is attractive might not be what I do but it won't be anything to do with the symmetry of your face.