Wanting to end it

I don't think I want to continue anymore. I'm neglected and abused constantly by my family. I continue to let down my friends and boyfriend by being so problematic. I can see myself slowly becoming like my family, I don't mean to, it just happens. Since I'm neglected, my health is also getting worse. Idk what to do anymore. I can't call for help, I've tried many times, no one believes me and thinks I'm overreacting since I'm a kid. Idk anymore. I'm sick of life.