A friend of yours in not feeling very confident. Write and

Hi ,Mary! Thank you for your letter. I hope you are fine. I'm really happy that you trust me and  share problems with me. It's valuable for me. But first of all, you must know that you are the best girl, who I've ever met. I hope you haven't forgotten that you have got a pretty appearance and спорт fit, amazing eyes and beautiful hair. So be proud of it! As for your problem, I'd like to say, just try to love yourself and other people, be more open to the whole world and make new friends easily. And everything will be okay!

Yours Kate:)