In order to believe them you have to believe in you and have faith. Do you really know what faith is....
"Faith is a bird that feels dawn breaking an sings wile it is still dark."
The bird much like you sits in the dark with only it's feelings and instincts. I'm sure the bird feels the day will never come, yet the birds instincts tell him different. Let not your feeling of dispare an defeat lead you but let your instincts, have faith that you no with out a doubt that the dawn is about to break for you. I'm not sure if you believe in God and I'm not here to tell you how to or you have to, although you do not have to in order to believe this verse from 2Corinth. 4:8-9
8 We are troubled on every side, yet not distressed; we are perplexed, but not in despair; 9 Persecuted, but not forsaken; cast down, but not destroyed;
As for your looks well there going to fade no matter what but I know this does not help so just remember that, 'Every great creation first went threw mass destruction.'
You are simply on your way to being a Great Creation. My friend she always wanted curly hair hers has always been straight plain Jane. But not after her chemo. Her hair came back so beautiful and so curly. She had prayed our whole lives for this curly hair an well God gave it to her but not with out a little destruction. I hope this shines a light an helps you to see all the things that are so hard to see in the dark.
Lots of love,
Ash