I'm a desperate girl with low self-esteem
What made you feel that way?
I've been neglected by my family since a child, I see no way out
It sounds like you had no one to help build you up in life. It must have been rough having no one to help you feel worthwhile, but I still think that you can overcome it.  Just think about the friends that enjoy your company.
I hate my life and I want to die.
Life is hard right now because people haven't been there for you, but that doesn't mean that you will always feel that way.  If you don't want to go on, I suggest getting in touch with a hotline right away.  They'll give you a chance to talk about how you feel, and you'll see that things will get better.