Kill myself?

I am at the point of no return. I'm 18 years old and I've gone through more pain and punishment then many people have in there whole life. My momthers been a ticking bomb dying every day since I was 5 my father is an iresponsible asshole that doesn't care for anyone. I have a job that's braking my back for shit pay but can't get any better and my school work unexciting. My goals in life look further everyday and i might just do something stupid at this point. Can't take this shit anymore...