"I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well." -Psalm 139:14 (New International Version, or simply "NIV")
I find that this verse is very powerful; if it could touch me into feeling more intimate with my Creator, how much more could it impact others, people who don't know Jesus yet? By reading this verse, I am reminded that I was born for a reason, a purpose, that I'm not just an accident. It shows that there is someone greater than what this world offers, someone who loves me so much despite my flaws and failures. As the loving father that He is, God will always catch me as I fall so I can be brought back to my feet and try again.
I understand how hard it is to feel that you are beautiful or amazing as I have struggled with this (sometimes, I still do, though not as much). Many teens and young adults have this problem. But I am grateful for friends and family who love Jesus and are filled with His Spirit; many of them have helped in shaping who I am today, a friend of Christ and a warrior for heavenly peace. This also reminds of of Proverbs 27: 17, which says (again, from the NIV): "As iron sharpens iron, so one person sharpens another." Without the people whom God brings into our lives, we probably would be in more turmoil.
If you feel like you cannot see yourself as beautiful, I just want to let you know that God loves you; He made you to be who you are and wants to show you how beautiful you are on the inside. He wants to perfect you more into a diamond out of the rubble of sin and despair. I also want to say that you are not alone. God had promised that he will never leave nor forsake us (Joshua 1:9). We also have friends and family to count on when we are at our lowest points.
I think a song would greatly sum up my point. The song in the video below is called, "Made," which is performed by Hawk Nelson off of their new album of the same name. I hope that this song and what I said brings you encouragement today.