That will up your chances of being helped, and drop your parents' odds of joining my sad company. First, get help with being suicidal. Next, get help with what took you there. Then get help to keep you from ever going back. Leave here with the understanding that suicide is like that bunny on TV - it goes on, and on, and on and just keeps going.
Suicide does nothing but screw things for up for everybody forever.
All of this isn't about me. Its about you. Its to get you to look out for yourself. You don't have to die, but if you don't fight it you will crash. You don't decide to do it, you do it to end the pain.