Aw, sweetie. There is more to life than how you look. If you really feel that you are not beautiful, and that not being beautiful is so important that it makes you want to die, then I do agree with others that you may need some professional help.
For what it's worth, I've got an asymmetrical face, too. What's particularly annoying is my eyes, which are quite different -- one is rounder, and one is flatter. It has always been so. Age has not improved matters, since I seem to have sustained more sun damage on my left side (the side that is exposed while driving a car!). If I could fix it, I would, but I can't and I've come to accept it. After all, I don't expect that my asymmetrical face affects other people's enjoyment of my company.
It turns out that many people have noticeable asymmetries (although to most outside observers, these asymmetries appear minimal). You are not alone. But if you are unable to enjoy life because you're so focused on it, you may have "body dysmorphic disorder". Here's a description:
"BDD is a body-image disorder characterized by persistent and intrusive preoccupations with an imagined or slight defect in one's appearance.
"People with BDD can dislike any part of their body, although they often find fault with their hair, skin, nose, chest, or stomach. In reality, a perceived defect may be only a slight imperfection or nonexistent. But for someone with BDD, the flaw is significant and prominent, often causing severe emotional distress and difficulties in daily functioning.
"People who have body dysmorphic disorder (BDD) think about their real or perceived flaws for hours each day.They can't control their negative thoughts and don't believe people who tell them that they look fine. Their thoughts may cause severe emotional distress and interfere with their daily functioning. They may miss work or school, avoid social situations and isolate themselves, even from family and friends, because they fear others will notice their flaws."